1. A full-automatic nucleic acid extraction device, characterized by comprising a processing table (1): the rear side and the rear side at the top of the machining table (1) are both welded with supporting arms (2), the top of the surface of each supporting arm (2) is provided with a slidable carriage (3), the inner cavity of each carriage (3) is provided with a vertical displacement assembly (4), one side of each carriage (3), which is far away from the vertical displacement assembly (4), is provided with an extraction assembly (5), each extraction assembly (5) comprises an extraction pipe (51) which penetrates through the bottom of each carriage (3), the surface of each extraction pipe (51) is welded with each carriage (3), the inner cavity of each extraction pipe (51) is provided with a slidable push-pull column (52), the front side of the inner cavity of each carriage (3) is provided with an extraction motor (54), the output shaft of each extraction motor (54) penetrates through the top of each carriage (3) and is fixedly connected with a driving disc (55), the left side of each driving disc (55) is provided with a stress disc (56) which is rotatably connected with each carriage (3), driving-disc (55) and atress dish (56) are connected through two transmissions of belt, displacement subassembly (6) about the top of processing platform (1) is provided with, the top of processing platform (1) is provided with slidable displacement platform (7), displacement subassembly (8) around the bottom of displacement platform (7) is provided with, the inner chamber of displacement platform (7) is provided with clamping component (9), two rectangle recess (10) have all been seted up to the both sides of displacement platform (7) inner chamber bottom, preparation box (11) have been placed to the inner chamber of rectangle recess (10), the inner chamber of preparation box (11) is arranged and is provided with a plurality of test tubes (12).

2. The full-automatic nucleic acid extraction device according to claim 1, wherein the vertical displacement assembly (4) comprises a vertical displacement motor (41) installed at the top of the carriage (3), a rotatable driving rod (42) is arranged in an inner cavity of the vertical displacement motor (41), a gear (43) is welded on the surface of the driving rod (42), a toothed plate (44) is welded on one side of the support arm (2) far away from the processing table (1), the gear (43) is meshed with the toothed plate (44), a transmission disc (45) is welded on each of an output shaft of the vertical displacement motor (41) and one end of the driving rod (42), and the two transmission discs (45) are in transmission connection through a belt.

3. The full-automatic nucleic acid extraction device according to claim 1, wherein the left and right displacement assembly (6) comprises a first stepping motor (61) installed on the left side of the processing table (1), an arc-shaped groove (65) is formed in the top of the processing table (1), a rotatable first lead screw (62) is arranged in an inner cavity of the arc-shaped groove (65), the right end of the first lead screw (62) is rotatably connected with the inner wall of the arc-shaped groove (65) through a bearing, the left end of the first lead screw (62) penetrates through the left side of the processing table (1) and is fixedly connected with an output shaft of the first stepping motor (61), a left and right sliding base (63) capable of sliding is arranged on the top of the processing table (1), a threaded pipe (64) is welded to the bottom of the left and right sliding base (63), and the threaded pipe (64) is in threaded connection with the surface of the first lead screw (62).

4. The automatic nucleic acid extracting device according to claim 1, wherein the top of the surface of the push-pull column (52) is provided with an external thread, and the force-bearing disk (56) is in threaded connection with the push-pull column (52).

5. The automatic nucleic acid extracting device according to claim 1, wherein a sealing plug (53) is sleeved on the bottom of the push-pull column (52), and the sealing plug (53) is made of elastic rubber.

6. The automatic nucleic acid extracting device according to claim 3, wherein the front and rear displacement assembly (8) comprises a second stepping motor (81) installed on the back surfaces of the left and right sliding bases (63), a rotatable second lead screw (82) is arranged in the inner cavity of the left and right sliding bases (63), the front end of the second lead screw (82) is rotatably connected with the inner wall of the left and right sliding bases (63) through a bearing, the rear end of the second lead screw (82) penetrates through the rear side of the left and right sliding bases (63) and is fixedly connected with the output shaft of the second stepping motor (81), a T-shaped sliding block (83) is welded at the bottom of the displacement platform (7), and the T-shaped sliding block (83) is in threaded connection with the surface of the second lead screw (82).

7. The automatic nucleic acid extracting device according to claim 1, wherein the clamping assembly (9) comprises clamping plates (91) which are arranged at two sides of the bottom of the inner cavity of the displacement platform (7) and can slide, guide rails (92) are welded at the front side and the rear side of the top of the displacement platform (7), and the clamping plates (91) are connected on the surfaces of the guide rails (92) in a sliding manner.

8. The full-automatic nucleic acid extraction device according to claim 1, wherein a fixing frame (93) is installed at the center of the bottom of the displacement platform (7), the two clamping plates (91) are both slidably connected to the surface of the fixing frame (93), a spring (94) is sleeved on the surface of the fixing frame (93), and two ends of the spring (94) are respectively welded with the two clamping plates (91).

9. The automatic nucleic acid extracting apparatus according to claim 1, wherein both sides of the supporting arm (2) are provided with a limiting sliding groove (13), and the top of the carriage (3) is provided with a limiting through hole (14) adapted to the limiting sliding groove (13).

10. The automatic nucleic acid extracting apparatus according to claim 1, wherein a positioning column (15) is welded to the top of the push-pull column (52), and the positioning column (15) is slidably connected to the carriage (3).

Background

Nucleic acids are divided into deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), wherein RNA can be divided into ribosomal RNA (rrna), messenger RNA (mrna) and transfer RNA (trna) according to its function, DNA is mainly concentrated in nuclei, mitochondria and chloroplasts, and RNA is mainly distributed in cytoplasm.

In the process of extracting nucleic acid, a specific medicament is adopted to separate nucleic acid components in cells from cell nucleuses or cytoplasm, so that extraction is completed, the traditional extraction mode of manual preparation is adopted, a user needs to concentrate on dropwise adding of liquid medicine to a test tube with a small volume, manual preparation cannot realize simultaneous extraction of a large amount of nucleic acid, errors possibly exist due to the influence of human factors in the preparation process, and then the quantity, accuracy and efficiency of nucleic acid extraction are influenced.

Disclosure of Invention

The invention aims to provide a full-automatic nucleic acid extraction device, which solves the technical problems that a traditional extraction mode adopting manual preparation requires a user to concentrate on dripping liquid medicine into a test tube with a small volume, manual preparation cannot realize simultaneous extraction of a large amount of nucleic acid, errors possibly exist due to the influence of human factors in the preparation process, and then the quantity and the accuracy of nucleic acid extraction and the efficiency of nucleic acid extraction are influenced.

The technical scheme for solving the technical problems is as follows: a full-automatic nucleic acid extraction device comprises a processing table: the rear side and the rear side of the top of the processing table are both welded with supporting arms, the top of the surface of each supporting arm is provided with a slidable carriage, the inner cavity of each carriage is provided with a vertical displacement assembly, one side of each carriage, which is far away from the vertical displacement assembly, is provided with an extraction assembly, the extraction assembly comprises an extraction pipe which is arranged at the bottom of each carriage in a penetrating manner, the surface of the extraction pipe is welded with each carriage, the inner cavity of the extraction pipe is provided with a slidable push-pull column, the front side of the inner cavity of each carriage is provided with an extraction motor, the output shaft of the extraction motor penetrates through the top of each carriage and is fixedly connected with a driving disc, the left side of the driving disc is provided with a stress disc which is rotatably connected with each carriage, the driving disc and the stress disc are in transmission connection through a belt II, the top of the processing table is provided with a left-right displacement assembly, and the top of the processing table is provided with a slidable displacement platform, the bottom of displacement platform is provided with the front and back displacement subassembly, displacement platform's inner chamber is provided with clamping component, two rectangle recesses have all been seted up to the both sides of displacement platform inner chamber bottom, the preparation box has been placed to the inner chamber of rectangle recess, the inner chamber of preparation box is arranged and is provided with a plurality of test tubes.

Preferably, vertical displacement subassembly is including installing the vertical displacement motor at the balladeur train top, vertical displacement motor's inner chamber is provided with rotatable actuating lever, the skin weld of actuating lever has the gear, one side welding that the processing platform was kept away from to the support arm has the pinion rack, the gear meshes with the pinion rack mutually, the transmission dish has all been welded to the output shaft of vertical displacement motor and the one end of actuating lever, and two transmission dishes pass through a belt drive and connect.

Preferably, control the displacement subassembly including installing at the left step motor of processing platform one, the arc recess has been seted up at the top of processing platform, the inner chamber of arc recess is provided with rotatable lead screw one, the right-hand member of lead screw one passes through the inner wall rotation of bearing and arc recess and is connected, the left end of lead screw one run through to the left side of processing platform and with step motor one's output shaft fixed connection, the top of processing platform is provided with slidable left and right sides slide, the bottom welding of left and right sides slide has the screwed pipe, screwed pipe threaded connection is on the surface of lead screw one.

Preferably, the top of the surface of the push-pull column is provided with an external thread, and the stress disc is in threaded connection with the push-pull column.

Preferably, the bottom of the push-pull column is sleeved with a sealing plug, and the sealing plug is made of elastic rubber.

Preferably, the front and back displacement assembly comprises a second stepping motor installed on the back surfaces of the left sliding seat and the right sliding seat, a second rotatable lead screw is arranged in an inner cavity of the left sliding seat and the right sliding seat, the front end of the second lead screw is rotatably connected with the inner wall of the left sliding seat and the inner wall of the right sliding seat through a bearing, the rear end of the second lead screw penetrates through the rear side of the left sliding seat and the rear side of the right sliding seat and is fixedly connected with an output shaft of the second stepping motor, a T-shaped sliding block is welded at the bottom of the displacement platform, and the T-shaped sliding block is in threaded connection with the surface of the second lead screw.

Preferably, clamping assembly is including setting up at displacement platform inner chamber bottom both sides and slidable splint, the guide rail has all been welded to the front side and the rear side at displacement platform top, splint sliding connection is on the surface of guide rail.

Preferably, the center department of displacement platform bottom installs the mount, and two equal sliding connection of splint are on the surface of mount, the surface cover of mount is equipped with the spring, the both ends of spring weld with two splint respectively.

Preferably, the two sides of the supporting arm are both provided with limiting sliding grooves, and the top of the sliding frame is provided with limiting through holes matched with the limiting sliding grooves.

Preferably, the top of the push-pull column is welded with a positioning column, and the positioning column is connected with the sliding frame in a sliding mode.

1. The invention has the beneficial effects that: the full-automatic nucleic acid extraction device drives the preparation boxes at different positions to reach the position under the extraction pipe through the matching use of the left and right displacement assemblies and the front and back displacement assemblies, then drives the sliding frame to displace through the arrangement of the vertical displacement assembly, and pumps, discharges and drips different samples or liquid medicines in different test tube inner cavities under the action of the extraction assembly, so that the purposes of automatic liquid medicine preparation and simultaneous preparation of multiple samples can be achieved.

Drawings

The above and/or other advantages of the invention will become more apparent and more readily appreciated from the following detailed description taken in conjunction with the accompanying drawings, which are given by way of illustration only and not by way of limitation, and in which:

FIG. 1 is a schematic perspective view of one embodiment of the present invention;

FIG. 2 is a schematic perspective view of a support arm and vertical displacement assembly in accordance with one embodiment of the present invention;

FIG. 3 is a perspective view of a carriage and extraction assembly in accordance with one embodiment of the present invention;

FIG. 4 is a perspective view of a displacement platform and clamping assembly in accordance with one embodiment of the present invention;

FIG. 5 is a perspective view of a displacement platform and front and rear displacement assemblies in accordance with one embodiment of the present invention;

FIG. 6 is a perspective view of a processing station and left and right displacement assemblies in accordance with one embodiment of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. processing platform, 2, supporting arm, 3, carriage, 4, vertical displacement subassembly, 41, vertical displacement motor, 42, actuating lever, 43, gear, 44, pinion rack, 45, driving disc, 5, extraction subassembly, 51, extraction pipe, 52, push-and-pull post, 53, sealing plug, 54, extraction motor, 55, driving disc, 56, stress disc, 6, left and right displacement subassembly, 61, step motor I, 62, lead screw I, 63, left and right slide, 64, screwed pipe, 65, arc groove, 7, displacement platform, 8, front and back displacement subassembly, 81, step motor II, 82, lead screw II, 83, T-shaped slider, 9, clamping component, 91, splint, 92, guide rail, 93, fixing frame, 94, spring, 10, rectangular groove, 11, preparation box, 12, test tube, 13, spacing spout, 14, spacing through-hole, 15, positioning post.

Detailed Description

The examples described herein are specific embodiments of the present invention, are intended to be illustrative and exemplary in nature, and are not to be construed as limiting the scope of the invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.

The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of respective portions and their mutual relationships. It is noted that the drawings are not necessarily to the same scale so as to clearly illustrate the structures of the various elements of the embodiments of the invention. Like reference numerals are used to denote like parts.

Example one

FIGS. 1 to 6 show a fully automatic nucleic acid isolation apparatus according to an embodiment of the present invention, which includes a processing table 1: the rear side and the rear side of the top of the processing table 1 are both welded with a support arm 2, the top of the surface of the support arm 2 is provided with a slidable carriage 3, the inner cavity of the carriage 3 is provided with a vertical displacement component 4, one side of the carriage 3, which is far away from the vertical displacement component 4, is provided with an extraction component 5, the extraction component 5 comprises an extraction pipe 51 which is arranged at the bottom of the carriage 3 in a penetrating way, the surface of the extraction pipe 51 is welded with the carriage 3, the inner cavity of the extraction pipe 51 is provided with a slidable push-pull column 52, the front side of the inner cavity of the carriage 3 is provided with an extraction motor 54, the output shaft of the extraction motor 54 penetrates to the top of the carriage 3 and is fixedly connected with a drive disk 55, the left side of the drive disk 55 is provided with a stress disk 56 which is rotatably connected with the carriage 3, the drive disk 55 and the stress disk 56 are in transmission connection through a belt II, the top of the processing table 1 is provided with a left-right displacement component 6, the top of the processing table 1 is provided with a slidable displacement platform 7, displacement assembly 8 around displacement platform 7's bottom is provided with, and displacement platform 7's inner chamber is provided with clamping component 9, and two rectangle recesses 10 have all been seted up to the both sides of displacement platform 7 inner chamber bottom, and preparation box 11 has been placed to the inner chamber of rectangle recess 10, and the inner chamber of preparation box 11 is arranged and is provided with a plurality of test tubes 12.

As a preferred embodiment of the present embodiment: vertical displacement subassembly 4 is including installing the vertical displacement motor 41 at balladeur train 3 top, the inner chamber of vertical displacement motor 41 is provided with rotatable actuating lever 42, the skin weld of actuating lever 42 has gear 43, one side welding that processing platform 1 was kept away from to support arm 2 has pinion rack 44, gear 43 meshes with pinion rack 44 mutually, transmission disc 45 has all been welded to the output shaft of vertical displacement motor 41 and the one end of actuating lever 42, two transmission disc 45 pass through belt transmission and connect, setting through vertical displacement subassembly 4, wherein at the drive of vertical displacement motor 41, gear 43 and pinion rack 44's cooperation is used down, make balladeur train 3 can take place the displacement from top to bottom, then drive extraction tube 51 and get into the inner chamber of test tube 12, absorb the liquid medicine or the sample of the inner chamber of test tube 12.

As a preferred embodiment of the present embodiment: the left and right displacement assembly 6 comprises a first stepping motor 61 arranged on the left side of the processing table 1, an arc groove 65 is arranged at the top of the processing table 1, a rotatable first lead screw 62 is arranged in an inner cavity of the arc groove 65, the right end of the first lead screw 62 is rotatably connected with the inner wall of the arc groove 65 through a bearing, the left end of the first lead screw 62 penetrates through the left side of the processing table 1 and is fixedly connected with an output shaft of the first stepping motor 61, a slidable left and right sliding seat 63 is arranged at the top of the processing table 1, a threaded pipe 64 is welded at the bottom of the left and right sliding seat 63, the threaded pipe 64 is in threaded connection with the surface of the first lead screw 62, and through the arrangement of the left and right displacement assembly 6, wherein the left and right sliding seats 63 can be driven by the first stepping motor 61 and matched use of the first lead screw 62 and the threaded pipe 64 to drive the left and right sliding seats 63 to generate horizontal left and right displacement at the top of the processing table 1, so that the preparation boxes 11 corresponding to the top of the displacement platform 7 reach the right of the extraction pipe 51, for aspiration by the aspiration tube 51.

As a preferred embodiment of the present embodiment: the top on the surface of the push-pull column 52 is provided with an external thread, the stress disc 56 is in threaded connection with the push-pull column 52, and the stress disc 56 and the push-pull column 52 are matched for use, so that the inner cavity of the extraction tube 51 forms high pressure or negative pressure, and then the liquid medicine or the sample in the inner cavity of the extraction tube 51 is pumped and discharged.

As a preferred embodiment of the present embodiment: the bottom of the push-pull column 52 is sleeved with a sealing plug 53, and the sealing plug 53 is made of elastic rubber.

As a preferred embodiment of the present embodiment: the front and rear displacement assembly 8 comprises a second stepping motor 81 arranged on the back surface of the left and right sliding seats 63, a second rotatable lead screw 82 is arranged in an inner cavity of the left and right sliding seats 63, the front end of the second lead screw 82 is rotatably connected with the inner wall of the left and right sliding seats 63 through a bearing, the rear end of the second lead screw 82 penetrates through the rear side of the left and right sliding seats 63 and is fixedly connected with an output shaft of the second stepping motor 81, a T-shaped sliding block 83 is welded at the bottom of the displacement platform 7, the T-shaped sliding block 83 is in threaded connection with the surface of the second lead screw 82, the front and rear displacement assembly 8 is arranged, the second lead screw 82 and the T-shaped sliding block 83 are driven to be matched for use, the displacement platform 7 is horizontally displaced forwards and backwards, and then the preparation box 11 corresponding to the top of the displacement platform 7 reaches the position under the extraction pipe 51, and is sucked by the extraction pipe 51.

Example two

FIGS. 1 to 6 show a fully automatic nucleic acid isolation apparatus according to an embodiment of the present invention, which includes a processing table 1: the rear side and the rear side of the top of the processing table 1 are both welded with a support arm 2, the top of the surface of the support arm 2 is provided with a slidable carriage 3, the inner cavity of the carriage 3 is provided with a vertical displacement component 4, one side of the carriage 3, which is far away from the vertical displacement component 4, is provided with an extraction component 5, the extraction component 5 comprises an extraction pipe 51 which is arranged at the bottom of the carriage 3 in a penetrating way, the surface of the extraction pipe 51 is welded with the carriage 3, the inner cavity of the extraction pipe 51 is provided with a slidable push-pull column 52, the front side of the inner cavity of the carriage 3 is provided with an extraction motor 54, the output shaft of the extraction motor 54 penetrates to the top of the carriage 3 and is fixedly connected with a drive disk 55, the left side of the drive disk 55 is provided with a stress disk 56 which is rotatably connected with the carriage 3, the drive disk 55 and the stress disk 56 are in transmission connection through a belt II, the top of the processing table 1 is provided with a left-right displacement component 6, the top of the processing table 1 is provided with a slidable displacement platform 7, displacement assembly 8 around displacement platform 7's bottom is provided with, and displacement platform 7's inner chamber is provided with clamping component 9, and two rectangle recesses 10 have all been seted up to the both sides of displacement platform 7 inner chamber bottom, and preparation box 11 has been placed to the inner chamber of rectangle recess 10, and the inner chamber of preparation box 11 is arranged and is provided with a plurality of test tubes 12.

As a preferred embodiment of the present embodiment: vertical displacement subassembly 4 is including installing the vertical displacement motor 41 at balladeur train 3 top, the inner chamber of vertical displacement motor 41 is provided with rotatable actuating lever 42, the skin weld of actuating lever 42 has gear 43, one side welding that processing platform 1 was kept away from to support arm 2 has pinion rack 44, gear 43 meshes with pinion rack 44 mutually, transmission disc 45 has all been welded to the output shaft of vertical displacement motor 41 and the one end of actuating lever 42, two transmission disc 45 pass through belt transmission and connect, setting through vertical displacement subassembly 4, wherein at the drive of vertical displacement motor 41, gear 43 and pinion rack 44's cooperation is used down, make balladeur train 3 can take place the displacement from top to bottom, then drive extraction tube 51 and get into the inner chamber of test tube 12, absorb the liquid medicine or the sample of the inner chamber of test tube 12.

As a preferred embodiment of the present embodiment: the left and right displacement assembly 6 comprises a first stepping motor 61 arranged on the left side of the processing table 1, an arc groove 65 is arranged at the top of the processing table 1, a rotatable first lead screw 62 is arranged in an inner cavity of the arc groove 65, the right end of the first lead screw 62 is rotatably connected with the inner wall of the arc groove 65 through a bearing, the left end of the first lead screw 62 penetrates through the left side of the processing table 1 and is fixedly connected with an output shaft of the first stepping motor 61, a slidable left and right sliding seat 63 is arranged at the top of the processing table 1, a threaded pipe 64 is welded at the bottom of the left and right sliding seat 63, the threaded pipe 64 is in threaded connection with the surface of the first lead screw 62, and through the arrangement of the left and right displacement assembly 6, wherein the left and right sliding seats 63 can be driven by the first stepping motor 61 and matched use of the first lead screw 62 and the threaded pipe 64 to drive the left and right sliding seats 63 to generate horizontal left and right displacement at the top of the processing table 1, so that the preparation boxes 11 corresponding to the top of the displacement platform 7 reach the right of the extraction pipe 51, for aspiration by the aspiration tube 51.

As a preferred embodiment of the present embodiment: the top on the surface of the push-pull column 52 is provided with an external thread, the stress disc 56 is in threaded connection with the push-pull column 52, and the stress disc 56 and the push-pull column 52 are matched for use, so that the inner cavity of the extraction tube 51 forms high pressure or negative pressure, and then the liquid medicine or the sample in the inner cavity of the extraction tube 51 is pumped and discharged.

As a preferred embodiment of the present embodiment: the bottom of the push-pull column 52 is sleeved with a sealing plug 53, and the sealing plug 53 is made of elastic rubber.

As a preferred embodiment of the present embodiment: the front and rear displacement assembly 8 comprises a second stepping motor 81 arranged on the back surface of the left and right sliding seats 63, a second rotatable lead screw 82 is arranged in an inner cavity of the left and right sliding seats 63, the front end of the second lead screw 82 is rotatably connected with the inner wall of the left and right sliding seats 63 through a bearing, the rear end of the second lead screw 82 penetrates through the rear side of the left and right sliding seats 63 and is fixedly connected with an output shaft of the second stepping motor 81, a T-shaped sliding block 83 is welded at the bottom of the displacement platform 7, the T-shaped sliding block 83 is in threaded connection with the surface of the second lead screw 82, the front and rear displacement assembly 8 is arranged, the second lead screw 82 and the T-shaped sliding block 83 are driven to be matched for use, the displacement platform 7 is horizontally displaced forwards and backwards, and then the preparation box 11 corresponding to the top of the displacement platform 7.

As a preferred embodiment of the present embodiment: clamping assembly 9 is including setting up at displacement platform 7 inner chamber bottom both sides and slidable splint 91, and guide rail 92 has all been welded to the front side and the rear side at displacement platform 7 top, and splint 91 sliding connection is on the surface of guide rail 92.

As a preferred embodiment of the present embodiment: the center department of displacement platform 7 bottom installs mount 93, and the equal sliding connection of two splint 91 is on the surface of mount 93, and the surface cover of mount 93 is equipped with spring 94, and spring 94's both ends weld with two splint 91 respectively, through the setting of clamping component 9, wherein uses down in splint 91, mount 93 and spring 94's cooperation, has played certain spacing clamping effect to preparation box 11, has improved the stability of preparation box 11 at the emergence displacement in-process then.

As a preferred embodiment of the present embodiment: spacing spout 13 has all been seted up to the both sides of support arm 2, and spacing through-hole 14 with spacing spout 13 looks adaptation is seted up at balladeur train 3's top.

As a preferred embodiment of the present embodiment: the top of the push-pull column 52 is welded with a positioning column 15, and the positioning column 15 is connected with the sliding frame 3 in a sliding manner.

The working principle is as follows: when the device is used, a user places liquid medicine or a sample to be prepared in the inner cavity of the preparation box 11, then places the preparation box 11 in the inner cavity of the rectangular groove 10, reserves the rectangular groove 10 for placing purified water for cleaning the extraction pipe 51 according to the characteristics of the liquid medicine or the sample, then opens the vertical displacement motor 41, the first stepping motor 61, the extraction pipe 51 and the second stepping motor 81, and controls the driving states of the four driving devices through a computer;

the first stepping motor 61 drives the first screw rod 62 to rotate, then the threaded pipe 64 positioned at the top of the first screw rod 62 drives the left and right sliding seats 63 to horizontally displace left and right at the top of the supporting arm 2, meanwhile, the displacement platform 7 horizontally displaces left and right under the driving of the left and right sliding seats 63, then the second stepping motor 81 drives the second screw rod 82 to rotate, so that the T-shaped sliding block 83 positioned on the surface of the second screw rod 82 drives the displacement platform 7 to horizontally displace front and back, and the displacement platform 7 can drive the designated preparation box 11 to reach the position under the extraction pipe 51 through the matching use of the left and right displacement assemblies 6 and the front and back displacement assemblies 8;

then, the vertical displacement motor 41 drives the gear 43 to rotate through the transmission disc 45, because the gear 43 is engaged with the toothed plate 44, while the gear 43 rotates, the driving rod 42 drives the carriage 3 to vertically displace up and down on the surface of the supporting arm 2, so that the carriage 3 drives the extracting component 5 to move down, after the bottom end of the extracting tube 51 is inserted into the inner cavity of the designated test tube 12, the extracting motor 54 drives the force-bearing disc 56 to rotate through the driving disc 55, in the rotating process of the force-bearing disc 56, through the matching use of the internal thread of the inner wall thereof and the external thread on the surface of the push-pull column 52, the push-pull column 52 drives the sealing plug 53 to move up in the inner cavity of the extracting tube 51, so that the inner cavity of the extracting tube 51 forms negative pressure, the liquid medicine or the sample in the inner cavity of the test tube 12 is sucked, and then under the action of the vertical displacement component, when the left-right displacement assembly 6 and the front-back displacement assembly 8 are used in a matched manner, another designated preparation box 11 reaches the position under the extraction tube 51, the carriage 3 drives the extraction assembly 5 to descend again, so that the extraction tube 51 enters the inner cavity of the current test tube 12, the extraction motor 54 rotates reversely, the push-pull column 52 pushes the sealing plug 53 downwards, and the liquid medicine or the sample absorbed in the inner cavity of the extraction tube 51 is dripped into the inner cavity of the current test tube 12;

through the operation of the steps, the purposes of automatic liquid medicine preparation and simultaneous preparation of multiple samples can be achieved.

In summary, the following steps: this full-automatic nucleic acid extraction element, use through the cooperation of controlling displacement subassembly 6 and front and back displacement subassembly 8, it reachs the extraction tube 51 to drive the preparation box 11 of different positions under, subsequently, through the setting of vertical displacement subassembly 4, it takes place the displacement to drive balladeur train 3, and under extraction subassembly 5's effect, pump drainage dropwise add is carried out to different samples or liquid medicine in different test tube 12 inner chambers, can reach the purpose that automatic liquid medicine was equipped with and many samples were equipped with simultaneously, the extraction mode that the tradition adopted artifical equipment has been solved, the user need concentrate attention on and carry out the dropwise add of liquid medicine to the less test tube of volume, artifical preparation can't realize drawing simultaneously of a large amount of nucleic acid, and in-process at the preparation, there is the error probably because of the influence of human factor, then influenced the quantity of nucleic acid extraction, accuracy and nucleic acid extraction efficiency's problem.

The technical features disclosed above are not limited to the combinations with other features disclosed, and other combinations between the technical features can be performed by those skilled in the art according to the purpose of the invention, so as to achieve the purpose of the invention.