CN112378726B - A solid-phase extraction device for food detects - Google Patents
A solid-phase extraction device for food detects Download PDFInfo
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- CN112378726B CN112378726B CN202110059393.3A CN202110059393A CN112378726B CN 112378726 B CN112378726 B CN 112378726B CN 202110059393 A CN202110059393 A CN 202110059393A CN 112378726 B CN112378726 B CN 112378726B
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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
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/02—Food
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
- G01N2030/062—Preparation extracting sample from raw material
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- Food Science & Technology (AREA)
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Abstract
The invention discloses a solid phase extraction device for food detection, which comprises a base, a mounting frame arranged on the base, a liquid storage box arranged at the top of the mounting frame, a plurality of extraction columns connected with the bottom of the liquid storage box through a plurality of sampling pipes, a negative pressure mechanism arranged below the extraction columns, a driving mechanism used for connecting the extraction columns and the negative pressure mechanism, an extraction liquid collection box arranged below the negative pressure mechanism and an elution liquid collection box. According to the invention, the extraction columns required by extraction are installed together through the clamping plate, then the driving mechanism is used for realizing the connection of the extraction columns with the negative pressure mechanism conveniently and rapidly, meanwhile, the liquid inlet of the vacuum pump is driven to be communicated with the liquid outlets of the extraction columns, and the firmness of installation is displayed by lightening the display lamp, so that the reliability of installation is greatly improved, and the efficiency of solid-phase extraction is improved.
Description
Technical Field
The invention relates to the technical field of food detection, in particular to a solid phase extraction device for food detection.
Background
The solid phase extraction is to adsorb a target compound in a liquid sample by using a solid adsorbent, separate the target compound from a matrix and an interfering compound of the sample, and then elute or heat-desorb the target compound by using eluent to achieve the purpose of separating and enriching the target compound.
The existing solid phase extraction device is mostly installed step by step through manual work, and the firmness of installation is mostly judged through experience of operators, so that time and labor are wasted during installation, and the working efficiency of solid phase extraction is greatly reduced.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a solid phase extraction device for food detection.
In order to achieve the purpose, the invention adopts the following technical scheme:
a solid phase extraction device for food detection comprises a base, a mounting frame arranged on the base, a liquid storage box arranged at the top of the mounting frame, a plurality of extraction columns connected with the bottom of the liquid storage box through a plurality of sampling pipes, a negative pressure mechanism arranged below the extraction columns, a driving mechanism used for connecting the extraction columns and the negative pressure mechanism, an extraction liquid collection box arranged below the negative pressure mechanism and an elution liquid collection box;
the negative pressure mechanism comprises a box body arranged in the mounting frame, a plurality of vacuum pumps arranged in the box body, a liquid inlet connected with the tops of the vacuum pumps through liquid guide pipes and a sealing plate arranged in the box body in a sliding mode and used for sealing the liquid inlet, the left side of the sealing plate is connected with a connecting plate, a plurality of first tooth blocks meshed with gears are arranged at the bottom of the connecting plate, the gears are arranged in the box body in a rotating mode, liquid guide grooves matched with the liquid inlet are formed in the sealing plate, a plurality of liquid inlet guide seats are arranged at the top of the box body, and the box body;
the driving mechanism comprises a first screw rod rotatably arranged in the mounting frame, a first screw seat arranged on the first screw rod, a mounting plate arranged on the side surface of the first screw seat, two upright posts arranged at the left end and the right end of the top of the box body, a clamping plate arranged between the two upright posts in a sliding way and used for connecting a plurality of sampling pipes, a connecting plate arranged below the clamping plate and two guide plates arranged at the left end and the right end of the bottom of the connecting plate, the bottom of the connecting plate is connected with the top of the box body through a plurality of first return springs, one end of the sampling pipe close to the extraction column is connected with the mounting plate through a T-shaped block, the bottom of the T-shaped block is provided with a conical plug tightly plugged with the extraction column, the bottom of the mounting plate is provided with a plurality of pressure bars, the first screw rod is driven by a first motor, a display lamp is embedded in the front side face of the connecting plate, and one end, far away from the threaded seat, of the mounting plate is connected with the mounting frame in a sliding mode;
the left end the deflector is close to box one side and evenly is provided with a plurality of and gear engagement's second tooth piece, two the deflector slides and sets up in the deflector at both ends about the box, the deflector bottom is provided with the stopper.
Further, the box left side is provided with the installation piece, the installation piece is embedded to be equipped with two metal blocks, and two metal blocks are connected with the sheetmetal through second reset spring in one side in opposite directions, the metal block top slides and is provided with the clamp plate, the clamp plate passes through third reset spring and is connected with the installation piece, the clamp plate bottom is provided with linking metal sheet, the stopper bottom is provided with the kicking block with clamp plate top contact, two the metal block is connected with the display lamp electricity respectively.
Further, set up in the mounting panel with T type piece complex mounting groove, the mounting groove left and right sides is provided with two sets of clamping components, and clamping components specifically are two fixture blocks that set up both ends about the mounting groove, the fixture block passes through spring telescopic rod and mounting groove inner wall connection.
Further, both sides slide about in the splint and are provided with two clamp plates, and two clamp plates pass through the threaded rod and connect, the threaded rod both ends are seted up and are revolved to opposite screw thread section, all set up in two clamp plates with the threaded rod internal thread hole of closing soon, the threaded rod rotates with splint to be connected, and one end runs through splint and handle connection, two the clamp plate is equipped with a plurality of clamp splices in one side in opposite directions, and the arc recess has been seted up to one side in opposite directions to a plurality of clamp splices, be provided with the arc buffer board in the arc recess.
Further, a rubber plug is arranged in the liquid inlet guide seat, and a through hole attached to the bottom of the extraction column is formed in the rubber plug.
Further, the bottom of vacuum pump is connected with a plurality of dismantlement formula drain pipes, it is provided with two semi-annular collecting plates to slide in both ends about the support, and two semi-annular collecting plates are installed respectively in two second screw thread seats one side, and two second screw thread seats set up respectively in second lead screw both ends, the second lead screw rotates and sets up in the support, two screw thread sections that revolve to opposite are seted up at second lead screw both ends, the second lead screw passes through second motor drive, annular collecting plate bottom inlays and is equipped with infrared emitter.
Further, extraction collecting tank and elution collecting tank install in the slide top, the slide slides and sets up on the base, be provided with a plurality of third tooth pieces with worm wheel meshing in the slide, the worm wheel rotates and sets up in base and interior and worm meshing, the worm passes through third motor drive.
Further, extraction liquid collecting tank and elution liquid collecting tank top all inlay be equipped with infrared emitter complex infrared receiver, infrared receiver's output is connected with the input of treater electricity, the output of treater is connected with the input of relay electricity, the output and the third motor electricity of relay are connected.
Further, a plurality of one end and the flow divider bottom of extraction post are kept away from to the sampling pipe are connected, the flow divider top is connected with the liquid outlet of liquid reserve tank.
And furthermore, the liquid inlet guide seats, the extraction columns, the sampling pipes, the detachable liquid outlet pipes and the vacuum pumps are in one-to-one correspondence with the mounting positions.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the extraction columns required by extraction are installed together through the clamping plate, then the driving mechanism is used for realizing the connection of the extraction columns with the negative pressure mechanism conveniently and rapidly, meanwhile, the liquid inlet of the vacuum pump is driven to be communicated with the liquid outlets of the extraction columns, and the firmness of installation is displayed by lightening the display lamp, so that the reliability of installation is greatly improved, and the efficiency of solid-phase extraction is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a solid phase extraction device for food detection according to the present invention;
FIG. 2 is a schematic diagram of the internal structure of a driving mechanism in a solid-phase extraction device for food detection according to the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is a schematic diagram of the internal structure of a negative pressure mechanism in the solid-phase extraction apparatus for food detection according to the present invention;
FIG. 5 is an enlarged view at B in FIG. 4;
FIG. 6 is a schematic view of the internal structure of a mounting block in a solid phase extraction device for food detection according to the present invention;
FIG. 7 is a top view of a clamping plate of the solid phase extraction device for food detection according to the present invention;
FIG. 8 is a schematic diagram of the internal structure of a semi-annular collecting plate in a solid phase extraction device for food detection according to the present invention;
FIG. 9 is a top sectional view of a semi-annular collecting plate of the solid phase extraction device for food inspection according to the present invention;
fig. 10 is a schematic diagram of the internal structure of a sliding base in the solid-phase extraction device for food detection according to the present invention.
In the figure: 1. a base; 2. a mounting frame; 3. a liquid storage tank; 4. an extraction column; 5. a negative pressure mechanism; 51. a box body; 52. a vacuum pump; 53. a sealing plate; 54. a connecting plate; 55. a gear; 56. a liquid inlet guide seat; 6. a drive mechanism; 61. a first lead screw; 62. a first threaded seat; 63. a column; 64. mounting a plate; 6401. a clamping assembly; 65. a splint; 6501. a clamping plate; 6502. a threaded rod; 6503. a clamping block; 66. a guide plate; 6601. a limiting block; 67. connecting plates; 68. a T-shaped block; 69. a pressure lever; 7. an extraction liquid collection tank; 8. an elution liquid collection tank; 9. a display lamp; 91. mounting blocks; 92. a metal block; 93. a metal sheet; 94. pressing a plate; 95. joining the metal plates; 10. a semi-annular collection plate; 11. a slide base; 111. a worm gear; 112. a worm; 12. a support; 121. a second threaded seat; 122. a second lead screw; 13. a flow divider valve; 14. an infrared emitter; 15. an infrared receiver.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to FIGS. 1-7; a solid phase extraction device for food detection comprises a base 1, a mounting frame 2 arranged on the base 1, a liquid storage tank 3 arranged at the top of the mounting frame 2, a plurality of extraction columns 4 connected with the bottom of the liquid storage tank 3 through a plurality of sampling pipes, a negative pressure mechanism 5 arranged below the extraction columns 4, a driving mechanism 6 used for connecting the extraction columns 4 with the negative pressure mechanism 5, an extraction liquid collecting tank 7 arranged below the negative pressure mechanism 5 and an elution liquid collecting tank 8;
the negative pressure mechanism 5 comprises a box body 51 arranged in the mounting frame 2, a plurality of vacuum pumps 52 arranged in the box body 51, a liquid inlet connected with the top of the vacuum pump 52 through a liquid guide pipe, and a sealing plate 53 arranged in the box body 51 in a sliding manner and used for sealing the liquid inlet, wherein the left side of the sealing plate 53 is connected with a connecting plate 54, the bottom of the connecting plate 54 is provided with a plurality of first tooth blocks meshed with a gear 55, the gear 55 is rotatably arranged in the box body 51, a liquid guide groove matched with the liquid inlet is formed in the sealing plate 53, a plurality of liquid inlet guide seats 56 are arranged at the top of the box body 51, and the;
the driving mechanism 6 comprises a first screw rod 61 rotatably arranged in the mounting frame 2, a first screw seat 62 arranged on the first screw rod 61, a mounting plate 64 arranged on the side surface of the first screw seat 62, two upright posts 63 arranged at the left and right ends of the top of the box body 51, a clamping plate 65 slidably arranged between the two upright posts 63 and used for connecting a plurality of sampling tubes, a connecting plate 67 arranged below the clamping plate 65 and two guide plates 66 arranged at the left and right ends of the bottom of the connecting plate 67, the bottom of the connecting plate 67 is connected with the top of the box body 51 through a plurality of first return springs, one end of each sampling tube close to the extraction column 4 is connected with the mounting plate 64 through a T-shaped block 68, the bottom of the T-shaped block 68 is provided with a conical plug tightly plugged with the extraction column 4, the bottom of the mounting plate 64 is provided with a plurality of pressure rods 69, the first screw rod 61 is driven by a first motor, a display lamp 9 is embedded in the front, the length dimension of the strut 69 is shorter than the distance between the mounting plate 64 and the clamping plate 65;
a plurality of second tooth blocks meshed with the gear 55 are uniformly arranged on one side, close to the box body 51, of the left end guide plate 66, the two guide plates 66 are arranged in the guide blocks at the left end and the right end of the box body 51 in a sliding mode, and the bottom of each guide plate 66 is provided with a limiting block 6601.
Further, with reference to fig. 1-10; box 51 left side is provided with installation piece 91, the embedded two metal blocks 92 that are equipped with of installation piece 91, two metal blocks 92 are connected with sheetmetal 93 through second reset spring in one side in opposite directions, metal block 92 top slides and is provided with clamp plate 94, clamp plate 94 is connected with installation piece 91 through third reset spring, clamp plate 94 bottom is provided with linking metal sheet 95, stopper 6601 bottom is provided with the kicking block with clamp plate 94 top contact, two metal blocks 92 are connected with display lamp 9 electricity respectively.
Further, with reference to FIGS. 2-7; the mounting plate 64 is internally provided with a mounting groove matched with the T-shaped block 68, the left side and the right side of the mounting groove are provided with two groups of clamping components 6401, the clamping components 6401 are specifically two clamping blocks arranged at the upper end and the lower end of the mounting groove, and the clamping blocks are connected with the inner wall of the mounting groove through spring telescopic rods.
Further, with reference to FIGS. 2-7; the upper and lower both sides slip in splint 65 is provided with two clamp plates 6501, two clamp plates 6501 pass through threaded rod 6502 and connect, the opposite screw thread section of direction soon has been seted up at threaded rod 6502 both ends, all set up the internal thread hole of closing soon with threaded rod 6502 in two clamp plates 6501, threaded rod 6502 rotates with splint 65 to be connected, and one end runs through splint 65 and is connected with the handle, two clamp plates 6501 are equipped with a plurality of clamp splice 6503 to one side in opposite directions, the arc recess has been seted up to one side in opposite directions to a plurality of clamp splice 6503, be provided with the arc buffer board in the arc recess.
Further, with reference to FIGS. 2-7; a rubber plug is arranged in the liquid inlet guide seat 56, and a through hole which is attached to the bottom of the extraction column 4 is arranged in the rubber plug.
Further, with reference to fig. 1-10; the bottom of vacuum pump 52 is connected with a plurality of dismantlement formula drain pipes, it is provided with two semi-annular collecting plates 10 to slide in both ends about support 12, two semi-annular collecting plates 10 are installed respectively in two second screw thread seats 121 one side, two second screw thread seats 121 set up respectively in second lead screw 122 both ends, second lead screw 122 rotates and sets up in support 12, two screw thread sections that revolve to opposite have been seted up at second lead screw 122 both ends, second lead screw 122 passes through second motor drive, semi-annular collecting plate 10 bottom is inlayed and is equipped with infrared emitter 14.
Further, referring to fig. 1, 8-10; the extraction header tank 7 and the elution header tank 8 are arranged at the top of the sliding seat 11, the sliding seat 11 is arranged on the base 1 in a sliding manner, a plurality of third tooth blocks meshed with the worm wheel 111 are arranged in the sliding seat 11, the worm wheel 111 is rotatably arranged on the base 1 and is meshed with the worm 112, and the worm 112 is driven by a third motor.
Further, referring to fig. 1, 8-10; an infrared receiver 15 matched with the infrared emitter 14 is embedded in the tops of the extraction liquid collecting box 7 and the elution liquid collecting box 8, the output end of the infrared receiver 15 is electrically connected with the input end of the processor, the output end of the processor is electrically connected with the input end of the relay, the output end of the relay is electrically connected with a third motor, the processor is M-ATX-A68, and the relay is MY 2N-J.
Further, with reference to fig. 1-2; one end of each sampling pipe far away from the extraction column 4 is connected with the bottom of the diverter valve 13, and the top of the diverter valve 13 is connected with the liquid outlet of the liquid storage box 3.
Further, with reference to fig. 1-7; the number and the installation positions of the liquid inlet guide seats 56, the extraction columns 4, the sampling pipes, the detachable liquid outlet pipes and the vacuum pumps 52 are all in one-to-one correspondence.
The working principle is as follows: before use, a certain number of extraction columns 4 are placed in the two clamping blocks 6503, the threaded rod 6502 is rotated to move relatively in the clamping plate 65 through the two clamping plates 6501, then the two clamping blocks 6503 are driven to clamp the extraction columns 4, then the clamping plate 65 is sleeved on the upright post 63 and is in contact with the connecting plate 67, sampling pipes with the same number as the extraction columns 4 are taken, one ends of the sampling pipes with the T-shaped blocks 68 are installed on the installation plate 64, the clamping blocks are driven to hold the T-shaped blocks 68 through the telescopic spring rods in the clamping assembly 6401, and then the other ends of the sampling pipes are connected with the liquid storage box 3 through the flow dividing valve 13;
then, the first motor is started to drive the first screw rod 61 to drive the first screw seat 62 to move downwards, so as to drive the mounting plate 64 on one side of the first screw seat 62 to move downwards, so as to drive the conical plug at the bottom of the T-shaped block 68 to contact with the top of the extraction column 4, at the moment, under the action of the first return spring, the connecting plate 67 provides a supporting force for the extraction column 4 in the clamping plate 65 until the conical plug is abutted into the extraction column 4, at the moment, the pressure rod 69 at the bottom of the mounting plate 64 can extrude the first return spring to drive the liquid outlet at the bottom of the extraction column 4 to contact with the top of the liquid inlet guide seat 56, at the moment, the first tooth block at the inner side of the guide plate 66 at the bottom of the connecting plate 54 is meshed with the gear 55, when the mounting plate 64 is continuously pressed downwards, the liquid outlet at the bottom of the extraction column 4 is abutted into the liquid inlet guide seat 56, the gear 55 is driven to, the sealing plate 53 is further driven to move leftwards until the liquid guide groove in the sealing plate 53 is communicated with the liquid inlet of the liquid inlet guide seat 56 and the liquid inlet of the vacuum pump 52, and meanwhile, the top block at the lower end of the limiting block 6601 at the bottom of the guide plate 66 drives the pressing plate 94 to move downwards, so that the connecting metal plate 95 is contacted with the metal sheet 93, the two metal blocks 92 are further communicated, and the display lamp 9 is powered;
then, the detachable liquid outlet pipe is connected with a liquid outlet of the vacuum pump 52, so as to drive the second motor, further drive the second screw rod 122 to rotate, drive the two second threaded seats 121 on the second screw rod 122 to move relatively, further drive the two semi-annular collecting plates 10 to move relatively, and further furl the detachable liquid outlet pipes together;
when extraction is carried out, the third motor is started first to drive the worm 112 to rotate, and then the worm wheel 111 is driven to rotate, and then the sliding seat 11 is driven to move through the third tooth block meshed with the worm wheel 111, when the extraction liquid collecting box 7 in the sliding seat 11 moves to the position right below the semi-annular collecting plate 10, the infrared receiver 15 at the top of the extraction liquid collecting box 7 receives a signal of the infrared emitter 14 at the bottom of the semi-annular collecting plate 10, the infrared emitter 14 sends the signal to the processor for processing, the processor sends a processed instruction to the relay, the relay controls the third motor to stop rotating, a food sample is introduced into the liquid storing box 3, the vacuum pump 52 is started, and extraction is carried out through the extraction column 4;
after the extraction finishes after a period of time, start the third motor and rotate and then drive elution liquid collecting tank 8 and remove under semiannular collecting plate 10, and then the infrared receiver 15 at 8 tops of elution liquid collecting tank receives the signal of the infrared emitter 14 of semiannular collecting plate 10 bottom, and then control third motor stall, again with the leading-in liquid reserve tank 3 of eluant, restart vacuum pump 52, and then elute extraction column 4.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A solid phase extraction device for food detection is characterized by comprising a base (1), a mounting rack (2) arranged on the base (1), a liquid storage box (3) arranged at the top of the mounting rack (2), a plurality of extraction columns (4) connected with the bottom of the liquid storage box (3) through a plurality of sampling pipes, a negative pressure mechanism (5) arranged below the extraction columns (4), a driving mechanism (6) used for connecting the extraction columns (4) and the negative pressure mechanism (5), an extraction liquid collecting box (7) arranged below the negative pressure mechanism (5) and an elution liquid collecting box (8);
the negative pressure mechanism (5) comprises a box body (51) arranged in the mounting frame (2), a plurality of vacuum pumps (52) arranged in the box body (51), a liquid inlet connected with the top of the vacuum pumps (52) through a liquid guide pipe, and a sealing plate (53) arranged in the box body (51) in a sliding manner and used for sealing the liquid inlet, wherein a connecting plate (54) is connected to the left side of the sealing plate (53), a plurality of first tooth blocks meshed with a gear (55) are arranged at the bottom of the connecting plate (54), the gear (55) is rotatably arranged in the box body (51), a liquid guide groove matched with the liquid inlet is formed in the sealing plate (53), a plurality of liquid inlet guide seats (56) are arranged at the top of the box body (51), and the box body (51) is connected with the base (1) through;
the driving mechanism (6) comprises a first screw rod (61) rotatably arranged in the mounting frame (2), a first thread seat (62) arranged on the first screw rod (61), a mounting plate (64) arranged on the side surface of the first thread seat (62), two upright posts (63) arranged at the left end and the right end of the top of the box body (51), a clamping plate (65) arranged between the two upright posts (63) in a sliding manner and used for connecting a plurality of sampling pipes, a connecting plate (67) arranged below the clamping plate (65) and two guide plates (66) arranged at the left end and the right end of the bottom of the connecting plate (67), wherein the bottom of the connecting plate (67) is connected with the top of the box body (51) through a plurality of first reset springs, one end of each sampling pipe close to the extraction column (4) is connected with the mounting plate (64) through a T-shaped block (68), and a conical plug tightly plugged with the extraction column (4) is arranged at the bottom, the bottom of the mounting plate (64) is provided with a plurality of pressing rods (69), the first screw rod (61) is driven by a first motor, a display lamp (9) is embedded in the front side face of the connecting plate (67), one end, far away from the threaded seat, of the mounting plate (64) is connected with the mounting frame (2) in a sliding mode, and the length of each pressing rod (69) is shorter than the distance between the mounting plate (64) and the clamping plate (65);
the guide plate (66) at the left end is provided with a plurality of second tooth blocks meshed with the gear (55) on one side close to the box body (51), the two guide plates (66) are arranged in the guide blocks at the left end and the right end of the box body (51) in a sliding manner, and the bottom of each guide plate (66) is provided with a limiting block (6601).
2. The solid phase extraction device for food detection according to claim 1, wherein a mounting block (91) is arranged on the left side of the box body (51), two metal blocks (92) are embedded in the mounting block (91), one sides of the two metal blocks (92) facing each other are connected with a metal sheet (93) through a second return spring, a pressing plate (94) is slidably arranged above the metal blocks (92), the pressing plate (94) is connected with the mounting block (91) through a third return spring, a connecting metal plate (95) is arranged at the bottom of the pressing plate (94), a top block contacting with the top of the pressing plate (94) is arranged at the bottom of the limiting block (6601), and the two metal blocks (92) are respectively electrically connected with the display lamp (9).
3. The solid phase extraction device for food detection according to claim 1, wherein a mounting groove matched with the T-shaped block (68) is formed in the mounting plate (64), two sets of clamping assemblies (6401) are arranged on the left and right sides of the mounting groove, the clamping assemblies (6401) are two clamping blocks arranged on the upper and lower ends of the mounting groove, and the clamping blocks are connected with the inner wall of the mounting groove through spring telescopic rods.
4. The solid phase extraction device for food detection according to claim 1, wherein two clamping plates (6501) are slidably arranged on the upper side and the lower side in the clamping plate (65), the two clamping plates (6501) are connected through a threaded rod (6502), threaded sections with opposite rotation directions are formed at two ends of the threaded rod (6502), internal threaded holes screwed with the threaded rod (6502) are formed in the two clamping plates (6501), the threaded rod (6502) is rotatably connected with the clamping plate (65), one end of the threaded rod penetrates through the clamping plate (65) and is connected with the handle, a plurality of clamping blocks (6503) are arranged on one opposite side of the two clamping plates (6501), an arc-shaped groove is formed in one opposite side of the plurality of clamping blocks (6503), and an arc-shaped buffer plate is arranged in the arc-shaped groove.
5. The solid phase extraction device for food detection according to claim 1, wherein a rubber plug is arranged in the liquid inlet guide seat (56), and a through hole attached to the bottom of the extraction column (4) is arranged in the rubber plug.
6. The solid-phase extraction device for food detection according to claim 1, wherein a plurality of detachable liquid outlet pipes are connected to the bottom of the vacuum pump (52), two semi-annular collecting plates (10) are slidably disposed in the left and right ends of the support (12), the two semi-annular collecting plates (10) are respectively mounted on one side of two second screw seats (121), the two second screw seats (121) are respectively disposed on two ends of a second screw rod (122), the second screw rod (122) is rotatably disposed in the support (12), two screw segments with opposite rotation directions are disposed at two ends of the second screw rod (122), the second screw rod (122) is driven by a second motor, and an infrared emitter (14) is embedded in the bottom of the semi-annular collecting plate (10).
7. The solid phase extraction device for food detection according to claim 1, wherein the extraction header tank (7) and the elution header tank (8) are mounted on top of a slide carriage (11), the slide carriage (11) is slidably disposed on the base (1), a plurality of third tooth blocks meshed with a worm wheel (111) are disposed in the slide carriage (11), the worm wheel (111) is rotatably disposed on the base (1) and meshed with a worm (112), and the worm (112) is driven by a third motor.
8. The solid phase extraction device for food detection according to claim 1, wherein an infrared receiver (15) matched with the infrared emitter (14) is embedded in the top of each of the extraction liquid collecting tank (7) and the elution liquid collecting tank (8), the output end of the infrared receiver (15) is electrically connected with the input end of the processor, the output end of the processor is electrically connected with the input end of the relay, and the output end of the relay is electrically connected with the third motor.
9. The solid phase extraction device for food detection according to claim 1, wherein one end of the plurality of sampling pipes, which is far away from the extraction column (4), is connected with the bottom of a diverter valve (13), and the top of the diverter valve (13) is connected with a liquid outlet of the liquid storage tank (3).
10. The solid phase extraction device for food detection according to claim 1, wherein the number and installation positions of the liquid inlet guide seats (56), the extraction columns (4), the sampling pipes, the detachable liquid outlet pipes and the vacuum pumps (52) are in one-to-one correspondence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110059393.3A CN112378726B (en) | 2021-01-18 | 2021-01-18 | A solid-phase extraction device for food detects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110059393.3A CN112378726B (en) | 2021-01-18 | 2021-01-18 | A solid-phase extraction device for food detects |
Publications (2)
| Publication Number | Publication Date |
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| CN112378726A CN112378726A (en) | 2021-02-19 |
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| CN112973578A (en) * | 2021-03-16 | 2021-06-18 | 江西诺邦生物科技有限公司 | Disinfectant production is with low temperature dry distillation extraction element |
| CN220986106U (en) * | 2021-05-10 | 2024-05-21 | 苏州金猫咖啡有限公司 | Production device for fresh extracted coffee |
| CN113109521A (en) * | 2021-05-11 | 2021-07-13 | 江西渠成氟化学有限公司 | Production detection device of fluorine-containing chemical intermediate |
| CN113238009B (en) * | 2021-05-13 | 2023-04-11 | 新疆农垦科学院 | A solid-phase extraction device for food detects |
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