CN114602324A - Clamping type filter membrane replacing system for environmental DNA sampling - Google Patents
Clamping type filter membrane replacing system for environmental DNA sampling Download PDFInfo
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- CN114602324A CN114602324A CN202210149471.3A CN202210149471A CN114602324A CN 114602324 A CN114602324 A CN 114602324A CN 202210149471 A CN202210149471 A CN 202210149471A CN 114602324 A CN114602324 A CN 114602324A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/08—Flat membrane modules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/10—Testing of membranes or membrane apparatus; Detecting or repairing leaks
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M33/00—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
- C12M33/04—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus by injection or suction, e.g. using pipettes, syringes, needles
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M33/00—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
- C12M33/14—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus with filters, sieves or membranes
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/48—Automatic or computerized control
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Abstract
The invention provides a clamping type filter membrane replacing system for environmental DNA sampling, wherein a filter membrane is assembled into a filter cake with an integral structure by an annular shell, and the filter membrane replacing system comprises: the device comprises a magazine type mechanism, a sampling device and a sampling device, wherein a plurality of filter cakes to be sampled are arranged in the magazine type mechanism; the sampling area is used for receiving the filter cake to be sampled and collecting a water sample of the filter cake to be sampled; the clamp is got the device, gets the device and includes anchor clamps, and anchor clamps are used for pressing from both sides the filter cake clamp that will treat the sampling and get to the sampling district and carry out the water sample collection, have avoided getting the filter membrane through the manual work because the different error that cause of gimmick, and the mode of getting the filter cake through anchor clamps clamp has improved the precision that the filter membrane was changed greatly.
Description
Technical Field
The invention belongs to the technical field of water sample collection, and particularly relates to a clamping type filter membrane replacing system for environmental DNA sampling.
Background
Along with the promotion of new strategies for global biodiversity management and the implementation of the 'biodiversity convention' of the united nations, the importance of biodiversity investigation and research is more and more prominent. With the development of biodiversity research, large-scale and high-frequency metagenomic analysis of environmental DNA and microorganisms in water is generally required, which requires large-scale filtration of water samples and high-frequency replacement of filtration membranes. Different from the common filter membrane replacement scene, in the environment DNA sampling or microorganism sampling scene, extra attention needs to be paid to avoid cross contamination among samples, new pollution caused by the operation process is avoided, and therefore the independence of the samples and the accuracy of the detection result are ensured. In the conventional method for simply and directly replacing the filter membrane, after a water sample is filtered by the disc filter membrane, an experimenter manually opens the filter head and takes out the filter membrane containing the sample by using clean tweezers, then the clean tweezers are used for clamping a new disc filter membrane to replace the filter head, and finally the filter head is manually installed again. Whether applied to long-term continuous monitoring at a fixed site or to sequential sampling of multiple sites following an investigation vessel, means a large scale, high frequency of replacement disc filter operations. The main problems and deficiencies in the prior art include: due to the current manual replacement of the disk filter membrane, the operation is complicated, and different experimenters may introduce errors due to different operation methods. Moreover, the operation procedures of disassembling, taking the film, replacing the film and re-installing consume a lot of time and labor, and are not beneficial to high-frequency sampling. And thirdly, pollution is easily caused by manual replacement of the filter membrane, so that the deviation of the sample investigation result is caused. Finally, the manual replacement of the filter membrane is not easy to operate, is not conducive to automatic sampling and filtration, and is not conducive to standardized long-term continuous sampling or online continuous monitoring activities. The solutions for replacing the filter membranes by pneumatic adsorption used in other fields are liable to cause cross-contamination between the filter membranes. The scheme of replacing the filter membrane by the rotary disc type used in other fields has less filter membrane quantity which can be accommodated, and cannot meet the application of replacing the disc filter membrane scene at large scale and high frequency.
That is, in the conventional filter membrane replacement method, the filter membrane replacement is performed manually, which has the disadvantages of complicated operation, error introduced by different experimenters due to different operation methods, and low replacement efficiency.
Therefore, how to improve the replacement speed of the filter membrane replacement, and reduce the error in the replacement process, thereby improving the replacement efficiency of the filter membrane is a technical problem that needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
The invention provides a clamping type filter membrane replacing system for environmental DNA sampling, which at least solves the technical problems that:
in order to solve the above problems, a first aspect of the present invention provides a clamping-type filter membrane exchange system usable for environmental DNA sampling, the filter membrane being assembled as a filter cake of an integrated structure by an annular housing, the filter membrane exchange system comprising: the device comprises a magazine type mechanism, a sampling device and a sampling device, wherein a plurality of filter cakes to be sampled are arranged in the magazine type mechanism; the sampling area is used for receiving the filter cake to be sampled and collecting a water sample of the filter cake to be sampled; the clamping device comprises a clamp, and the clamp is used for clamping a filter cake to be sampled to the sampling area.
In a first aspect, the sampling area comprises a semicircular base, a top cover is arranged on one side of the upper part of the base, and a cake containing space for receiving the filter cake is formed between the base and the top cover; the magazine type mechanism comprises a magazine barrel, a plurality of filter cakes to be sampled in the magazine barrel are arranged in an up-and-down stacking mode, the magazine barrel is located on the other side of the upper portion of the base, and a cake passing channel capable of passing through the height of one filter cake is reserved on the magazine barrel and away from the upper portion of the base; the clamping device further comprises a first driving device, the first driving device is used for executing rotation, and the first driving device is arranged at the position of the circle center of the base, is in driving connection with the clamp and is used for driving the clamp to rotate around the circle center; the cake containing space and the cake passing channel are both positioned on a path of the clamp rotating around the circle center; when the first driving device executes rotation action and enables the clamp to rotate back and forth along the cake passing channel to the cake containing space, the filter cakes to be sampled in the channel are clamped to the cake containing space one by one to collect a water sample.
In a first aspect, the clamp comprises: the filter cake clamping device comprises a left claw finger, a right claw finger and a second driving device, wherein the left claw finger and the right claw finger are both arc-shaped, one end of the left claw finger and one end of the right claw finger are coupled with the second driving device through a gear set, when the second driving device drives, the gear set drives the left claw finger and one end, far away from a coupling end, of the right claw finger to open and close together, and the left claw finger and the right claw finger jointly form a clamping space matched with an outer edge of a filter cake.
In the first aspect, the opposite side surfaces of the left claw finger and the right claw finger are provided with anti-slip layers.
In a first aspect, the filter membrane replacement system comprises: the detection device is used for detecting the position of the clamp and generating position information; the control device is connected with the detection device and is used for acquiring the position information; the control device is also connected with the first driving device and the second driving device; when the position information received by the control device is a preset position, the first driving device is controlled to execute the rotation action, and the second driving device is controlled to drive.
In a first aspect, the detection device comprises a camera.
In a first aspect, the detecting device includes an angle sensor, the angle sensor is disposed at a driving end of the first driving device, and when the first driving device performs a rotation motion, the detecting device detects whether a rotation angle of the first driving device reaches a preset rotation angle, and if so, determines that the first driving device rotates to a preset position.
In a first aspect, the filter membrane replacement system comprises: and the driving end of the third driving device is connected with the clamp, the third driving device is used for executing tangential rotation action, and when the third driving device executes the tangential action, the clamp rotates along the horizontal tangential direction.
In a first aspect, the first drive, the second drive and the third drive each comprise one of the following motors: stepper motors or servo motors.
Has the advantages that: the invention provides a clamping type filter membrane replacing system for environmental DNA sampling, which is characterized in that a plurality of filter cakes are arranged in a magazine type mechanism, then the filter cakes in the magazine type mechanism are clamped by a clamping device to be conveyed to a sampling area for water sample sampling, the clamping device comprises a clamp, the mechanization of filter membrane replacement is realized by the clamping mode of the clamp, and the error caused by different methods of filter membrane replacement manually in the prior art is solved.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a first block diagram of a clamping filter membrane exchange system for environmental DNA sampling according to a first embodiment of the present invention;
FIG. 2 is a diagram of a second configuration of a clamping filter exchange system for environmental DNA sampling according to a first embodiment of the present invention;
FIG. 3 is a top view of a clamping filter exchange system for environmental DNA sampling according to one embodiment of the present invention;
FIG. 4 is a schematic diagram showing the change in the positions of the clamps for gripping the filter cake.
Description of reference numerals:
1. a magazine type mechanism;
101. a magazine barrel;
2. a base;
3. a clamp;
301. a left paw finger;
302. a right paw finger;
4. a filter cake;
5. a first driving device;
6. a second driving device;
7. a fourth drive device;
8. a limiting rod;
9. a top cover;
10. a spring;
11. a limiting sheet;
12. a limiting column;
13. a crank lever;
14. a water inlet pipe;
15. a water outlet pipeline;
16. a magazine through hole;
17. a rotating shaft;
18. a fixed mount;
19. the fixing frame is provided with a through hole.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
Meanwhile, in the embodiments of the present description, when an element is referred to as being "fixed to" another element, it may be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical", "horizontal", "left", "right" and the like used in the embodiments of the present specification are for illustrative purposes only and are not intended to limit the present invention.
The first embodiment is as follows:
as shown in fig. 1 to 4, the present embodiment provides a clamping type filter membrane replacing system for environmental DNA sampling, in which a filter membrane is assembled into a filter cake 4 of an integrated structure by an annular housing, and the filter membrane replacing system comprises: a magazine type mechanism 1, a sampling area and a clamping device;
a plurality of filter cakes 4 to be sampled are arranged in the magazine type mechanism 1;
the sampling area is used for receiving the filter cake 4 to be sampled and collecting a water sample of the filter cake 4 to be sampled;
the clamping device comprises a clamp 3, and the clamp 3 is used for clamping a filter cake 4 to be sampled to a sampling area for water sample collection.
In the technical scheme of above-mentioned embodiment one, through setting up a plurality of filter cakes 4 in magazine type mechanism 1, then press from both sides the device through getting and carry out the centre gripping to filter cake 4 in magazine type mechanism 1 to carry out water sample collection in the sampling area, should press from both sides the device and include anchor clamps 3, press from both sides the mode through anchor clamps 3 and realize the mechanization that the filter membrane was changed, solved among the prior art and carried out the filter membrane through the manual work and change because the gimmick is different and the error that causes. The magazine type mechanism 1 comprises a magazine barrel 101, the magazine barrel 101 is fixed by a fixing frame 18, and a fixing frame through hole 19 is formed in the side wall of the fixing frame 18.
Further, regarding the filter membrane replacing system in the first embodiment, the first embodiment provides an implementation manner, which includes: the sampling area comprises a semicircular base 2, a top cover 9 is arranged on one side of the upper part of the base 2, and a cake containing space for receiving a filter cake 4 is formed between the base 2 and the top cover 9; the magazine type mechanism 1 comprises a magazine barrel 101, a plurality of filter cakes 4 to be sampled in the magazine barrel 101 are arranged in an up-and-down stacking mode, the magazine barrel 101 is positioned on the other side of the base 2, and a cake passing channel capable of passing through the height of one filter cake 4 is reserved on the upper surface, away from the base 2, of the magazine barrel 101; the clamping device further comprises a first driving device 5, the first driving device 5 is used for executing rotating action, and the first driving device 5 is arranged at the circle center position of the semicircular base 2, is in driving connection with the clamp 3 and is used for driving the clamp 3 to rotate around the circle center; wherein, the cake containing space and the cake passing channel are both positioned on the path of the clamp 3 rotating around the circle center; when the first driving device 5 executes the rotation action and the clamp 3 rotates to and fro along the cake passage to the cake containing space, the filter cakes 4 to be sampled in the cake passage are clamped to the cake containing space one by one for water sample collection.
Specifically, as for the jig 3, the first embodiment proposes an embodiment including: the filter cake clamping device comprises a left claw finger 301, a right claw finger 302 and a second driving device 6, wherein the left claw finger 301 and the right claw finger 302 are both arc-shaped, one end of the left claw finger 301 and one end of the right claw finger 302 are coupled with the second driving device 6 through a gear set, when the second driving device 6 drives the left claw finger 301 and one end of the right claw finger 302 far away from the coupling end to be opened and closed together, and the left claw finger 301 and the right claw finger 302 jointly form a cake clamping and containing space matched with the outer edge of a filter cake 4; the opening angle of the left claw finger 301 and the right claw finger 302 is larger than 90 degrees;
further, based on the basis that the filter cake 4 is clamped by the clamp 3 in the first embodiment, the first embodiment provides a technical solution of a detection assembly to improve the clamping precision, and the technical solution includes: detection means for detecting the position of the jig 3 and generating position information; the control device is connected with the detection device and used for acquiring the position information; the control device is also connected with a first driving device 5 and a second driving device 6; when the position information received by the control device is a preset position, the first driving device 5 is controlled to perform a rotating action, and the second driving device 6 is controlled to drive.
Further, as for the detection device, the first embodiment proposes an implementation manner, which includes: and the camera is used for acquiring the position information of the clamp 3.
Further, as for the detection device, the first embodiment proposes another implementation, which includes: the angle sensor is arranged at the driving end of the first driving device 5, detects whether the rotating angle of the first driving device 5 reaches a preset rotating angle or not when the first driving device 5 executes rotating action, and judges that the first driving device 5 rotates to a preset position if the rotating angle of the first driving device 5 reaches the preset rotating angle;
further, as for the detection device, an embodiment is also proposed in the first embodiment, which includes a manner of combining a camera and an angle sensor to jointly detect the position accuracy of the clamp 3.
For the filter membrane replacing system in the first embodiment, the first embodiment further provides an implementation manner, which includes: and the driving end of the third driving device is connected with the clamp 3, the third driving device is used for executing tangential rotation action, and when the third driving device executes the tangential action, the clamp 3 rotates along the horizontal tangential direction so as to turn over the filter membrane positioned in the filter cake 4.
Specifically, as for the first driving device 5, the second driving device 6, and the third driving device, as an embodiment of the first driving device 5, the second driving device 6, and the third driving device, a solution is proposed in the first embodiment, which includes: the first drive device 5, the second drive device 6 and the third drive device can be selected from stepping motors or servo motors.
Further, the first embodiment further provides an implementation manner, which includes: the filter membrane replacement system further comprises: the spring 10, the limiting piece 11 and the limiting rod 8, the limiting rod 8 penetrates through the base 2 through the top cover 9, the top cover 9 can slide up and down along the limiting rod 8, the spring 10 is sleeved on the limiting rod 8, the limiting piece 11 is arranged at one end, far away from the base 2, of the limiting rod 8, the spring 10 is limited between the limiting piece 11 and the top cover 9, and when the spring 10 is in an automatic extending state, the top cover 9 is pressed on the base 2; the limiting column 12 is vertically arranged, and the upper part of the limiting column 12 is conical; the pair of crank levers 13, the crank lever 13 is made of elastic metal material, the crank lever 13 is a long rod structure, both ends of the long rod structure are provided with interference parts in a protruding way, the middle part of the long rod structure is connected with the outer wall of the magazine type mechanism 1 through a rotating shaft 17, one end interference part of the long rod structure is contacted with the filter cake 4 in the magazine through hole 16 arranged at the corresponding side, and the other end interference part of the long rod structure is contacted with the upper part of the limit column 12; when the top cover 9 is at an initial position of initial rising, the pair of interference parts of the long rod structure are in natural contact with the filter cake 4 and the limiting column 12 correspondingly, when the top cover 9 is displaced upwards, the conical surface of the limiting column 12 pushes the interference part at the other end of the long rod structure, and the long rod structure rotates around the rotating shaft 17, so that the interference part at one end of the other end of the long rod structure is in close contact with the filter cake 4 at the corresponding side; one end of the connecting plate is fixedly connected with the top cover 9, and the upper surface of the connecting plate is used for bearing the limiting column 12; the driving end of the fourth driving device 7 is arranged on the lower surface of the connecting plate, and the fourth driving device 7 is used for executing the extending action and the retracting action; it should be noted that, when the filter membrane is clamped by the clamp 3, the fourth driving device 7 pushes the connecting plate to displace upwards, so that the connecting plate pushes the limiting column 12, so that the limiting column 12 applies force to the crank lever 13, so that the crank lever 13 clamps the filter cake 4 in the magazine through hole 16, so that the filter cake 4 in the cake passing channel is smoothly clamped, and when the clamp 3 is separated from the cake passing channel, the fourth driving mechanism drives the connecting plate to reset, so that the filter cake 4 in the magazine barrel 101 smoothly falls into the cake passing channel. Wherein, the top cover is provided with a water inlet pipeline 14 for introducing an external water source to be sampled, and the base is provided with a water outlet pipeline 15 for discharging after the collection is finished.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the following descriptions are only illustrative and not restrictive, and that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; and the modifications, changes or substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention. Are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (9)
1. A clamping filter membrane exchange system for environmental DNA sampling, said filter membrane being assembled by an annular housing as a filter cake of unitary construction, said filter membrane exchange system comprising:
the magazine type mechanism is internally provided with a plurality of filter cakes to be sampled;
the sampling area is used for receiving the filter cake to be sampled and collecting a water sample of the filter cake to be sampled;
the clamping device comprises a clamp, and the clamp is used for clamping a filter cake to be sampled to the sampling area.
2. The clamping filter membrane exchange system for environmental DNA sampling according to claim 1, wherein:
the sampling area comprises a semicircular base, a top cover is arranged on one side of the upper part of the base, and a cake containing space for receiving the filter cake is formed between the base and the top cover;
the magazine type mechanism comprises a magazine barrel, a plurality of filter cakes to be sampled in the magazine barrel are arranged in an up-and-down stacking mode, the magazine barrel is located on the other side of the upper portion of the base, and a cake passing channel capable of passing through the height of one filter cake is reserved on the magazine barrel and away from the upper portion of the base;
the clamping device further comprises a first driving device, the first driving device is used for executing rotation, and the first driving device is arranged at the position of the circle center of the base, is in driving connection with the clamp and is used for driving the clamp to rotate around the circle center;
the cake containing space and the cake passing channel are both positioned on a path of the clamp rotating around the circle center; when the first driving device executes rotation action and enables the clamp to rotate back and forth along the cake passing channel to the cake containing space, the filter cakes to be sampled in the channel are clamped to the cake containing space one by one to collect a water sample.
3. The clamping filter membrane exchange system for environmental DNA sampling according to claim 2, wherein the clamp comprises:
the filter cake clamping device comprises a left claw finger, a right claw finger and a second driving device, wherein the left claw finger and the right claw finger are both arc-shaped, one end of the left claw finger and one end of the right claw finger are coupled with the second driving device through a gear set, when the second driving device drives, the gear set drives the left claw finger and one end, far away from a coupling end, of the right claw finger to open and close together, and the left claw finger and the right claw finger jointly form a clamping space matched with an outer edge of a filter cake.
4. The clamping filter membrane exchange system for environmental DNA sampling according to claim 3, wherein:
the anti-skidding layers are arranged on the opposite side faces of the left claw finger and the right claw finger.
5. The clamping filter membrane exchange system for environmental DNA sampling according to claim 3, wherein the filter membrane exchange system comprises:
the detection device is used for detecting the position of the clamp and generating position information;
the control device is connected with the detection device and is used for acquiring the position information; the control device is also connected with the first driving device and the second driving device;
when the position information received by the control device is a preset position, the first driving device is controlled to execute the rotation action, and the second driving device is controlled to drive.
6. The clamping filter membrane exchange system for environmental DNA sampling according to claim 5, wherein:
the detection device comprises a camera.
7. The clamping filter membrane exchange system for environmental DNA sampling according to claim 5, wherein:
the detection device comprises an angle sensor, the angle sensor is arranged at the driving end of the first driving device, when the first driving device executes rotation action, whether the rotation angle of the first driving device reaches a preset rotation angle or not is detected, and if yes, it is judged that the first driving device rotates to a preset position.
8. The clamped filter membrane exchange system for environmental DNA sampling of claim 1, comprising:
and the driving end of the third driving device is connected with the clamp, the third driving device is used for executing tangential rotation action, and when the third driving device executes the tangential action, the clamp rotates along the horizontal tangential direction.
9. The clamping filter membrane exchange system for environmental DNA sampling according to claim 8, wherein the first driving device, the second driving device and the third driving device each comprise one of the following motors:
stepper motors or servo motors.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210149471.3A CN114602324B (en) | 2022-02-18 | 2022-02-18 | Clamping type filter membrane replacement system capable of being used for environmental DNA sampling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210149471.3A CN114602324B (en) | 2022-02-18 | 2022-02-18 | Clamping type filter membrane replacement system capable of being used for environmental DNA sampling |
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| CN114602324B CN114602324B (en) | 2023-06-27 |
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