CN215480935U

CN215480935U - Portable and rapid nucleic acid extraction device for nucleic acid detection

Info

Publication number: CN215480935U
Application number: CN202121869815.5U
Authority: CN
Inventors: 马晟利
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-01-11
Anticipated expiration: 2031-08-11

Abstract

A portable quick nucleic acid extraction device for nucleic acid detection belongs to the technical field of nucleic acid extraction equipment. The test tube rack comprises a box body frame, a shell, a transverse moving mechanism and a longitudinal moving mechanism, wherein the shell is installed outside the box body frame, a bottom plate is installed at the bottom of the inner side of the box body frame, the transverse moving mechanism and the longitudinal moving mechanism are installed on the bottom plate, a test tube rack installation seat is installed on the transverse moving mechanism, a fine adjustment mechanism is installed on the longitudinal moving mechanism, and a liquid transfer device is installed on the fine adjustment mechanism. The utility model has the advantages of flexible structural design, ingenious matching of parts, small occupied space, portability by a single person, and automatic, portable and rapid completion of nucleic acid extraction.

Description

Portable and rapid nucleic acid extraction device for nucleic acid detection

Technical Field

The utility model relates to a nucleic acid extraction device, and belongs to the technical field of nucleic acid extraction equipment.

Background

Nucleic acids (including DNA and RNA) are commonly used as raw materials for various analyses and experiments in medicine, pharmaceutical research, and clinical diagnostics.

In modern molecular biological assays, nucleic acid-based molecular diagnostic and detection techniques are increasingly showing crucial roles in a wide variety of fields.

For example, in the control of novel coronaviruses, early detection and early isolation of patients are the most critical. Early detection of patients relies on rapid and accurate nucleic acid detection.

Nucleic acid extraction is the starting point of downstream detection and genotyping, is one of the most critical basic methods in molecular biology, has widely penetrated into various life fields such as biology, genetics, medicine and the like, and the quality and integrity of the extracted isolated nucleic acid directly influence the subsequent detection efficiency and accuracy and play a key role after the inception.

In the prior art, the method for manually extracting nucleic acid is carried out in a biological safety cabinet, the operation steps are complicated, the extraction efficiency is low, and the nucleic acid is easy to spill and even cause infection if an operator does not operate properly. The existing method for automatically extracting nucleic acid is generally carried out by a nucleic acid extractor and needs to be finished in a separate laboratory, and during epidemic situation, nucleic acid detection is relatively random, and needs to be finished immediately after an operator collects nucleic acid, so that the detection work cannot be finished in the laboratory.

Based on the above statements, it is necessary to provide a portable and fast nucleic acid extraction device to meet the requirement of automatic nucleic acid extraction in real time.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving the above problems. The following presents a simplified summary of the utility model in order to provide a basic understanding of some aspects of the utility model. It should be understood that this summary is not an exhaustive overview of the utility model. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention.

The technical scheme of the utility model is as follows:

the utility model provides a portable swift formula nucleic acid extraction element for nucleic acid detects, includes box frame, shell, lateral shifting mechanism and longitudinal movement mechanism, and box frame's externally mounted has the shell, the bottom plate is installed to box frame's inboard bottom, installs lateral shifting mechanism and longitudinal movement mechanism on the bottom plate, install the test-tube rack mount pad on the lateral shifting mechanism, install fine-tuning on the longitudinal movement mechanism, install the pipettor on the fine-tuning.

Preferably: and a handle is arranged at the top of the box body frame.

Preferably: the box frame is a square frame assembled by aluminum alloy.

Preferably: the transverse moving mechanism comprises a transverse moving motor, a transverse moving motor base, a transverse moving lead screw, a transverse moving nut, a transverse moving slide rail, a transverse moving slide block and a transverse moving support, the transverse moving slide rail is arranged in parallel on the bottom plate, the transverse moving support is arranged on the transverse moving slide rail through the transverse moving slide block, the transverse moving nut is arranged on the transverse moving support, the transverse moving motor is arranged on the bottom plate through the transverse moving motor base, the output end of the transverse moving motor is arranged on the transverse moving lead screw, and the transverse moving lead screw is arranged on the transverse moving support in a matched mode.

Preferably: the processing has the recess that is used for holding test tube holder on the test-tube rack mount pad.

Preferably: the longitudinal moving mechanism comprises a longitudinal support, a longitudinal mounting seat, a longitudinal moving motor, a longitudinal moving nut, a longitudinal moving lead screw, a longitudinal moving slide rail, a longitudinal moving slide block and a pipettor mounting seat, the longitudinal support is fixedly mounted on the bottom plate, the longitudinal mounting seat is mounted on the longitudinal support, the longitudinal moving slide rail is mounted on the longitudinal mounting seat, the pipettor mounting seat slides on the longitudinal moving slide rail through the longitudinal moving slide block, a pipettor is mounted at the bottom of the pipettor mounting seat, the longitudinal moving lead screw is mounted on the longitudinal mounting seat through the longitudinal lead screw mounting seat, the longitudinal moving nut is mounted on the pipettor mounting seat, the longitudinal moving lead screw and the longitudinal moving nut are mounted in a matched manner, a first belt pulley is mounted at the top of the longitudinal moving lead screw, the longitudinal moving motor is fixedly mounted on the longitudinal mounting seat, and a second belt pulley is mounted at the output end of the longitudinal moving motor, the first belt pulley is installed with the second belt pulley through a belt, and the fine adjustment mechanism is installed on the liquid transfer device installation seat.

Preferably: the fine adjustment mechanism comprises a fine adjustment motor, a third belt pulley, a fourth belt pulley, a fine adjustment screw rod, a fine adjustment screw nut, a fine adjustment seat and an optical axis guide rod, the fine adjustment motor is fixedly installed on the liquid transfer installation seat, the third belt pulley is installed on an output shaft of the fine adjustment motor, the fine adjustment screw rod is installed on the liquid transfer installation seat through rotation of a bearing, the top end of the fine adjustment screw rod penetrates out of the liquid transfer installation seat and is installed in a matched mode with the fourth belt pulley, the third belt pulley is installed in a matched mode with the fourth belt pulley through a belt, the fine adjustment screw nut is installed on the fine adjustment seat, the fine adjustment screw nut and the fine adjustment screw rod are installed in a matched mode, the fine adjustment seat is sleeved with the optical axis guide rod, the optical axis guide rod is installed on the liquid transfer installation seat, a liquid transfer piston rod is further installed on the fine adjustment seat, and the liquid transfer piston rod penetrates through the liquid transfer installation seat and the piston in the liquid transfer device.

The utility model has the following beneficial effects:

1. the portable quick nucleic acid extraction device for nucleic acid detection has the advantages of flexible structural design, ingenious matching of parts, small occupied space, portability by a single person, and capability of ensuring the safety of transportation by being provided with a special equipment protection box;

2. under the mutual cooperation of the transverse moving mechanism, the longitudinal moving mechanism and the fine adjustment mechanism, the utility model can accurately realize the automatic extraction of nucleic acid, avoid the occurrence of improper operation and indirectly avoid the dangerous occurrence rate of virus infection and diffusion; 3. the nucleic acid extraction device of the present invention can extract nucleic acid with higher efficiency.

Drawings

FIG. 1 is a perspective view of a portable rapid nucleic acid extraction device for nucleic acid detection;

FIG. 2 is a diagram showing the internal configuration of a portable rapid nucleic acid isolation apparatus for nucleic acid detection;

FIG. 3 is a view showing the relationship between the installation positions of the lateral moving mechanism and the longitudinal moving mechanism;

FIG. 4 is a first perspective view of the longitudinal movement mechanism;

FIG. 5 is a second perspective view of the longitudinal movement mechanism;

FIG. 6 is a second perspective view of a portable rapid nucleic acid isolation apparatus for nucleic acid detection;

fig. 7 is a perspective view of a pipette mount;

in the figure, 1-box frame, 2-shell, 3-transverse moving mechanism, 4-longitudinal moving mechanism, 5-bottom plate, 6-test tube rack mounting seat, 7-fine adjusting mechanism, 8-pipettor, 10-transverse moving motor, 11-transverse moving motor seat, 12-transverse moving screw rod, 13-transverse moving screw nut, 14-transverse moving slide rail, 15-transverse moving slide block, 16-transverse moving support seat, 17-test tube support, 18-longitudinal support seat, 19-longitudinal mounting seat, 20-longitudinal moving motor, 21-longitudinal moving screw nut, 22-longitudinal moving screw rod, 23-longitudinal moving slide rail, 24-longitudinal moving slide block, 25-pipettor mounting seat, 26-longitudinal screw rod mounting seat, 27-a first belt pulley, 28-a second belt pulley, 29-a fine adjustment motor, 30-a third belt pulley, 31-a fourth belt pulley, 32-a fine adjustment screw rod, 33-a fine adjustment screw nut, 34-a fine adjustment seat and 35-an optical axis guide rod.

Detailed Description

In order that the objects, aspects and advantages of the utility model will become more apparent, the utility model will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The connection mentioned in the present invention is divided into a fixed connection and a detachable connection, the fixed connection (i.e. the non-detachable connection) includes but is not limited to a folding connection, a rivet connection, an adhesive connection, a welding connection, and other conventional fixed connection methods, the detachable connection includes but is not limited to a screw connection, a snap connection, a pin connection, a hinge connection, and other conventional detachment methods, when the specific connection method is not clearly defined, the function can be realized by always finding at least one connection method from the existing connection methods by default, and a person skilled in the art can select the connection method according to needs. For example: the fixed connection selects welding connection, and the detachable connection selects hinge connection.

The first embodiment is as follows:

referring to fig. 1-7, this embodiment provides a portable swift formula nucleic acid extraction element for nucleic acid detects, including box frame 1, shell 2, lateral shifting mechanism 3 and longitudinal movement mechanism 4, the externally mounted of box frame 1 has shell 2, bottom plate 5 is installed to the inboard bottom of box frame 1, installs lateral shifting mechanism 3 and longitudinal movement mechanism 4 on the bottom plate 5, install test-tube rack mount pad 6 on the lateral shifting mechanism 3, install fine tuning 7 on the longitudinal movement mechanism 4, install pipettor 8 on the fine tuning 7. The box body frame 1 is a square frame formed by assembling aluminum alloy.

A fetching and placing opening 40 is processed on the shell 2, the test tube bracket 17 is sent into the box body frame 1 from the fetching and placing opening 40 and is placed on the test tube rack mounting seat 6, and the extraction operation of nucleic acid is realized under the coordination action of the transverse moving mechanism 3, the longitudinal moving mechanism 4 and the fine adjustment mechanism 7; wherein lateral shifting mechanism 3 drives and goes up along lateral shifting on the test-tube rack mount pad 6 to the position of cooperation adjustment test-tube rack mount pad 6, vertical moving mechanism 4 drives fine-tuning 7 and pipettor 8 along longitudinal movement, in order to cooperate the position of adjusting pipettor 8 relative test tube (the test tube of depositing nucleic acid), arranges the rifle head on the pipettor 8 in the test tube, through the action of fine-tuning 7, realizes drawing the nucleic acid in the test tube.

In the embodiment, the transverse moving mechanism 3 and the longitudinal moving mechanism 4 are realized by matching a servo motor, a lead screw and a nut. The device has the advantages of high control precision and high adjustment precision.

The shell 2 is provided with a negative pressure fan to ensure the negative pressure of the environment and reduce the bacteria entering the box body.

The second embodiment is as follows:

referring to fig. 1-7, in the present embodiment, the traverse mechanism 3 includes a traverse motor 10, a traverse motor base 11, a traverse screw 12, a traverse nut 13, a traverse slide rail 14, a traverse slide block 15, and a traverse support 16, two traverse slide rails 14 are mounted on the bottom plate 5 in parallel, the traverse support 16 is mounted on the traverse slide rails 14 through the traverse slide block 15, the traverse support 16 is mounted with the traverse nut 13, the test tube rack is characterized in that the transverse moving motor 10 is installed on the bottom plate 5 through a transverse moving motor base 11, the output end of the transverse moving motor 10 is installed with a transverse moving lead screw 12, the transverse moving lead screw 12 is installed in a matched mode with a transverse moving screw nut 13 on a transverse moving support 16, and the test tube rack installation base 6 is installed on the transverse moving support 16.

When the test tube rack mounting seat works, the transverse moving motor 10 rotates to drive the transverse moving lead screw 12 to rotate, and the transverse moving lead screw 12 and the transverse moving nut 13 are installed in a matched mode, so that the transverse moving support 16 is driven to slide on the transverse moving slide rail 14 under the rotating action of the transverse moving lead screw 12, and the transverse position adjustment of the test tube rack mounting seat 6 is achieved.

The third concrete implementation mode:

referring to fig. 1 to 7, in this embodiment, in combination with the second embodiment, a groove for accommodating the test tube holder 17 is formed on the laterally moving support 16. The test tube holder 17 is placed in a groove on the lateral movement support 16 to improve the stability of the test tube holder 17, and nucleic acid in the test tube held in the test tube holder 17 is splashed during the lateral adjustment.

The fourth concrete implementation mode:

referring to fig. 1 to 7, in the present embodiment, the longitudinal moving mechanism 4 includes a longitudinal support 18, a longitudinal mounting seat 19, a longitudinal moving motor 20, a longitudinal moving nut 21, a longitudinal moving screw 22, a longitudinal moving slide rail 23, a longitudinal moving slider 24, and a pipette mounting seat 25, the longitudinal support 18 is fixedly mounted on the base plate 5, the longitudinal mounting seat 19 is mounted on the longitudinal support 18, the longitudinal moving slide rail 23 is mounted on the longitudinal mounting seat 19, the pipette mounting seat 25 slides on the longitudinal moving slide rail 23 through the longitudinal moving slider 24, a pipette 8 is mounted at the bottom of the pipette mounting seat 25, the longitudinal moving screw 22 is mounted on the longitudinal mounting seat 19 through the longitudinal screw mounting seat 26, the longitudinal moving nut 21 is mounted on the pipette mounting seat 25, and the longitudinal moving screw 22 is mounted in cooperation with the longitudinal moving nut 21, a first belt pulley 27 is mounted at the top of the longitudinal moving screw 22, the longitudinal moving motor 20 is fixedly mounted on the longitudinal mounting seat 19, a second belt pulley 28 is mounted at the output end of the longitudinal moving motor 20, the first belt pulley 27 establishes a mounting relation with the second belt pulley 28 through a belt, and the fine adjustment mechanism 7 is mounted on the pipette mounting seat 25. According to the arrangement, a plurality of rows of mounting threaded holes are processed in the longitudinal support 18 from top to bottom, the longitudinal mounting seat 19 is mounted in the threaded holes of the longitudinal support 18 by bolts and is influenced by the heights of test tubes (due to different heights of the test tubes used for collecting nucleic acid in different places), and when the heights need to be adjusted, the requirements of adapting to different heights can be met by adjusting the mounting positions of the longitudinal mounting seat 19 on the longitudinal support 18;

when the longitudinal moving mechanism works, the longitudinal moving motor 20 drives the second belt pulley 28 to rotate, the second belt pulley 28 drives the first belt pulley 27 to rotate, the screw 22 is moved longitudinally under the action of the first belt pulley 27 to drive the pipette mounting seat 25 to slide up and down on the longitudinal moving slide rail 23, and then the position of the pipette 8 in the longitudinal direction is adjusted.

The pipette mounting seat 25 is provided with a mounting part 37, the mounting part 37 is Z-shaped, and the longitudinal moving screw 21 is mounted on the mounting part 37.

The fifth concrete implementation mode:

referring to fig. 1 to 7, in this embodiment, the fine adjustment mechanism 7 includes a fine adjustment motor 29, a third belt pulley 30, a fourth belt pulley 31, a fine adjustment screw 32, a fine adjustment nut 33, a fine adjustment seat 34, and an optical axis guide rod 35, the fine adjustment motor 29 is fixedly mounted on the pipette mounting seat 25, the third belt pulley 30 is mounted on an output shaft of the fine adjustment motor 29, the fine adjustment screw 32 is rotatably mounted on the pipette mounting seat 25 through a bearing, a top end of the fine adjustment screw 32 penetrates through the pipette mounting seat 25 and is mounted in cooperation with the fourth belt pulley 31, the third belt pulley 30 is mounted in cooperation with the fourth belt pulley 31 through a belt, the fine adjustment seat 34 is mounted with the fine adjustment nut 33, the fine adjustment nut 33 and the fine adjustment screw 32 are mounted in cooperation, the fine adjustment seat 34 is sleeved with the optical axis guide rod 35, the optical axis guide rod 35 is mounted on the pipette mounting seat 25, the fine adjustment seat 34 is further mounted with a pipette piston rod 36, pipette piston rod 36 fits through pipette mount 25 and fits into a piston in pipette 8.

Specifically, have an installation department 37 on the pipettor mount pad 25, installation department 37 is "Z" style of calligraphy, and longitudinal movement screw 21 installs on installation department 37, has still processed open groove 38 on the pipettor mount pad 25, and fine setting seat 34 is established in open groove 38, and optical axis guide arm 35 installs on open groove 38's upper and lower lateral wall, and like this, whole fine setting mechanism 7's structure is compacter, and the occupation space area effectively reduces. In addition, such a pipette receptacle 25 can also provide a mounting position for the longitudinal movement nut 21 of the longitudinal movement mechanism 4, which also indirectly reduces the mounting footprint of the longitudinal movement mechanism 4.

In addition, the pipettor 8 is a hollow shell, one end of the hollow shell is fixed at the bottom of the pipettor mounting seat 25, the lower end of the hollow shell is provided with a nozzle, a disposable pipette head is mounted on the nozzle, a piston is arranged in the hollow shell, the piston is mounted in cooperation with a pipette piston rod 36, during operation, the fine adjustment motor 29 rotates, the fine adjustment motor 29 drives the third belt pulley 30 to rotate, the third belt pulley 30 is mounted in cooperation with the fourth belt pulley 31 through a belt, then the fourth belt pulley 31 drives the fine adjustment screw rod 32 to rotate, the fine adjustment screw rod 32 is mounted in cooperation with the fine adjustment screw rod 33, therefore, the fine adjustment seat 34 moves up and down in the opening groove 38, the pipette piston rod 36 on the fine adjustment seat 34 drives the piston in the pipettor 8 to move, and quantitative extraction of nucleic acid is realized.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

It should be noted that, in the above embodiments, as long as the technical solutions can be aligned and combined without contradiction, those skilled in the art can exhaust all possibilities according to the mathematical knowledge of the alignment and combination, and therefore, the present invention does not describe the technical solutions after alignment and combination one by one, but it should be understood that the technical solutions after alignment and combination have been disclosed by the present invention.

This embodiment is only illustrative of the patent and does not limit the scope of protection thereof, and those skilled in the art can make modifications to its part without departing from the spirit of the patent.

Claims

1. A portable swift formula nucleic acid extraction element for nucleic acid testing which characterized in that: including box frame (1), shell (2), lateral shifting mechanism (3) and longitudinal movement mechanism (4), the externally mounted of box frame (1) has shell (2), bottom plate (5) are installed to the inboard bottom of box frame (1), install lateral shifting mechanism (3) and longitudinal movement mechanism (4) on bottom plate (5), install test-tube rack mount pad (6) on lateral shifting mechanism (3), install fine-tuning (7) on longitudinal movement mechanism (4), install pipettor (8) on fine-tuning (7).

2. The portable rapid nucleic acid extraction device for nucleic acid detection according to claim 1, wherein: the box body frame (1) is a square frame assembled by aluminum alloy.

3. The portable rapid nucleic acid extraction device for nucleic acid detection according to claim 1, wherein: the transverse moving mechanism (3) comprises a transverse moving motor (10), a transverse moving motor base (11), a transverse moving lead screw (12), a transverse moving screw nut (13), a transverse moving slide rail (14), a transverse moving slide block (15) and a transverse moving support (16), wherein two transverse moving slide rails (14) which are arranged in parallel are installed on the bottom plate (5), the transverse moving support (16) is installed on the transverse moving slide rail (14) through the transverse moving slide block (15), the transverse moving screw nut (13) is installed on the transverse moving support (16), the transverse moving motor (10) is installed on the bottom plate (5) through the transverse moving motor base (11), the output end of the transverse moving motor (10) is installed with the transverse moving lead screw (12), the transverse moving lead screw (12) is installed with the transverse moving screw nut (13) on the transverse moving support (16) in a matching manner, the test tube rack mounting seat (6) is mounted on the transverse moving support (16).

4. The portable rapid nucleic acid extraction device for nucleic acid detection according to claim 3, wherein: the test tube rack mounting seat (6) is provided with a groove for accommodating the test tube bracket (17).

5. The portable rapid nucleic acid extraction device for nucleic acid detection according to claim 1, wherein: the longitudinal moving mechanism (4) comprises a longitudinal support (18), a longitudinal mounting seat (19), a longitudinal moving motor (20), a longitudinal moving screw nut (21), a longitudinal moving lead screw (22), a longitudinal moving slide rail (23), a longitudinal moving slide block (24) and a pipette mounting seat (25), the longitudinal support (18) is fixedly mounted on the bottom plate (5), the longitudinal mounting seat (19) is mounted on the longitudinal support (18), the longitudinal moving slide rail (23) is mounted on the longitudinal mounting seat (19), the pipette mounting seat (25) slides on the longitudinal moving slide rail (23) through the longitudinal moving slide block (24), a pipette (8) is mounted at the bottom of the pipette mounting seat (25), the longitudinal moving lead screw (22) is mounted on the longitudinal mounting seat (19) through the longitudinal lead screw mounting seat (26), and the longitudinal moving screw nut (21) is mounted on the pipette mounting seat (25), longitudinal movement lead screw (22) and longitudinal movement screw (21) cooperation installation, first belt pulley (27) are installed to the top of longitudinal movement lead screw (22), longitudinal movement motor (20) fixed mounting is on longitudinal installation seat (19), and second belt pulley (28) are installed to the output of longitudinal movement motor (20), and first belt pulley (27) establish the installation relation through belt and second belt pulley (28), fine-tuning (7) are installed on pipettor mount pad (25).

6. The portable rapid nucleic acid extraction device for nucleic acid detection according to claim 1, wherein: the fine adjustment mechanism (7) comprises a fine adjustment motor (29), a third belt pulley (30), a fourth belt pulley (31), a fine adjustment screw rod (32), a fine adjustment screw nut (33), a fine adjustment seat (34) and an optical axis guide rod (35), the fine adjustment motor (29) is fixedly installed on a liquid transfer installation seat (25), the third belt pulley (30) is installed on an output shaft of the fine adjustment motor (29), the fine adjustment screw rod (32) is installed on the liquid transfer installation seat (25) in a rotating mode through a bearing, the top end of the fine adjustment screw rod (32) penetrates out of the liquid transfer installation seat (25) and is installed in a matched mode with the fourth belt pulley (31), the third belt pulley (30) is installed in a matched mode with the fourth belt pulley (31) through a belt, the fine adjustment screw nut (33) is installed on the fine adjustment seat (34), the fine adjustment screw nut (33) is installed in a matched mode with the fine adjustment screw rod (32), and the optical axis guide rod (35) is sleeved on the fine adjustment seat (34), the optical axis guide rod (35) is installed on the pipette installation seat (25), a pipette piston rod (36) is further installed on the fine adjustment seat (34), and the pipette piston rod (36) penetrates through the pipette installation seat (25) and is installed in a manner of being matched with a piston in the pipette (8).