CN217948085U - Nucleic acid extractor - Google Patents

Abstract

The utility model relates to a nucleic acid extraction mechanical equipment technical field discloses a nucleic acid extraction appearance, including casing, transmission portion and transparent safety cover, transmission portion includes base and bearing plate, bottom surface fixed connection in base and the casing, bearing plate and base sliding connection, and fixed connection's the first portion of placing is along casing longitudinal movement under the drive of transmission portion on the bearing plate, and transparent safety cover is established at the casing lateral wall, and inside sliding connection has the second portion of placing. The nucleic acid extractor provided by the utility model has the advantages that the first placing part is driven by the transmission part to move longitudinally along the shell, so that medical staff can place or extract nucleic acid samples in the first placing part outside the shell conveniently, and the nucleic acid extractor is not restricted by the space of the shell and is convenient to operate; and through setting up the second portion of placing for more nucleic acid samples can be held to the nucleic acid extraction appearance, improve detection efficiency effectively, and the second portion of placing sets up in transparent safety cover, and the medical staff of being convenient for observes nucleic acid sample.

Description

Nucleic acid extractor

Technical Field

The utility model relates to a nucleic acid extraction mechanical equipment technical field, in particular to nucleic acid extraction appearance.

Background

With the continuous development and progress of medicine, when some serious infectious diseases appear in society, in order to screen patients and further detect the patients, the nucleic acid of a person to be detected needs to be extracted, wherein the nucleic acid is a general name of deoxyribonucleic acid and ribonucleic acid, and is a biological macromolecular compound polymerized by a plurality of nucleotide monomers, and the nucleic acid of each organism is different and has a specific nucleic acid sequence and a specific DNA sequence, so that whether the person to be detected has a gene sequence of the infectious disease in a human body is detected, and whether the person to be detected is infected with the disease is judged. In the process of extracting nucleic acid by medical personnel, a nucleic acid extractor is required, and with the frequent occurrence of various infectious diseases in recent years, such as the occurrence of new coronary epidemic situations, the demand for the nucleic acid extractor is increasing.

At present, the existing nucleic acid extraction instrument in the market has small integral volume, on one hand, the hands of medical staff are inconvenient to directly extend into the nucleic acid extraction instrument, and further the medical staff are difficult to place or take test tube bottles; on the other hand, the nucleic acid extractor is limited by a small internal space, so that the nucleic acid sample can be contained in a small amount, the nucleic acid sample is generally required to be intensively placed at other sample placing places, and after the detection of all the nucleic acids in the nucleic acid extractor is finished, the nucleic acid sample is taken out from other sample placing places for detection, so that the detection efficiency of nucleic acid detection becomes low. Therefore, the existing nucleic acid extraction instrument has narrow space, is difficult to operate and has low detection efficiency.

SUMMERY OF THE UTILITY MODEL

To the weak point that above-mentioned prior art exists, the utility model provides a nucleic acid extraction appearance has solved among the prior art nucleic acid extraction appearance narrow and small difficult operation in space, technical problem that detection efficiency is low.

The utility model provides a nucleic acid extraction instrument, include:

a housing;

the transmission part is arranged in the shell and comprises a base and a bearing plate, the base is fixedly connected with the bottom surface in the shell, the bearing plate is connected with the base in a sliding manner, a first placing part is fixedly connected onto the bearing plate, and the first placing part is driven by the transmission part to move longitudinally along the shell;

transparent safety cover, transparent safety cover is established the lateral wall of casing, sliding connection has the second to place the portion in the transparent safety cover.

Optionally, the base includes an installation seat and a chute, the installation seat and the chute are respectively arranged on two sides of the bottom surface in the housing along the longitudinal direction of the housing, a screw rod is arranged in the installation seat, a first transmission block and a second transmission block are respectively arranged on two sides of the bottom surface of the bearing plate, the first transmission block is in threaded connection with the screw rod, the second transmission block is in sliding connection with the chute, the housing is fixedly connected with a motor, and the motor is in driving connection with the screw rod; the motor drives the screw rod to rotate so as to drive the first transmission block to move in the mounting seat and the second transmission block to move in the sliding groove, and further the bearing plate is driven to move along the longitudinal direction of the shell.

Optionally, the bottom surface both sides of bearing plate are followed two mounting panels of vertical still fixedly connected with of casing, two the mounting panel respectively with first transmission piece with the second transmission piece sets up relatively, the mounting panel with first transmission piece and the mounting panel with all be connected with an elastic connection spare between the second transmission piece.

Optionally, the first placing part comprises a placing rack, the placing rack is fixedly connected with the bearing plate, and a plurality of partition plates are uniformly distributed in the placing rack along the longitudinal direction of the shell.

Optionally, a first extraction opening is formed in one end of the shell, the first placing portion penetrates through the first extraction opening along the longitudinal movement of the shell, a sealing door is hinged to the first extraction opening, a glass plate is embedded in the sealing door, and a handle assembly is fixedly connected to one side, away from the inside of the shell, of the sealing door.

Optionally, the handle assembly comprises two support plates arranged in parallel along the transverse direction of the sealing door, and a holding rod is connected between the two support plates; when the sealing door is opened and rotated to be parallel to the ground, the distance between the sealing door and the ground is equal to the length of the supporting plate.

Optionally, one end of the transparent protective cover is provided with a second extraction opening, and a sealing plate is hinged at the second extraction opening; the inner wall of the transparent protection cover is provided with a sliding rail along the longitudinal direction of the shell, and the second placing part passes through the second extraction opening along the longitudinal movement of the shell.

Optionally, the second placing part comprises a placing plate, and a handle is fixedly connected to one side of the placing plate close to the second extraction opening; the two sides of the placing plate are fixedly connected with sliding blocks, the sliding blocks are connected with the sliding rails in a sliding mode, and a plurality of placing grooves are uniformly formed in the top of the placing plate along the length direction.

Optionally, two sides of the placement groove along any diameter direction are provided with limiting grooves, a second elastic connecting piece is arranged in the limiting groove along the length direction of the limiting grooves, the second elastic connecting piece is connected with a limiting ring, the limiting ring is semicircular, two oppositely arranged limiting rings on the same diameter of the placement groove are folded to form a limiting ring, and the diameter of the inner wall of the limiting ring is equal to that of the inner wall of the placement groove.

Optionally, the four corners of the bottom surface of the housing are fixedly connected with supporting pieces.

The nucleic acid extractor provided by the utility model, through the arrangement of the transmission part, the first placing part is driven by the transmission part to move longitudinally along the shell, so that medical staff can place nucleic acid samples in the first placing part or extract nucleic acid samples from the first placing part outside the shell, and the nucleic acid extractor is not constrained by the space of the shell and is convenient to operate; and through setting up the second portion of placing at the casing lateral wall for the nucleic acid extraction appearance can hold more nucleic acid samples temporarily, avoids need keeping in other places when the quantity of nucleic acid sample is more, improves nucleic acid sample's detection efficiency effectively, and the second portion of placing sets up in transparent safety cover, and the medical staff of being convenient for observes nucleic acid sample.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of a nucleic acid extractor provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a nucleic acid extractor provided in an embodiment of the present application in an open state;

FIG. 3 is a schematic diagram showing a configuration of a first placing section in a case in the nucleic acid extractor according to the embodiment of the present application;

FIG. 4 is a schematic view of the connection between a base and a bearing plate in the nucleic acid isolation apparatus according to the embodiment of the present application;

FIG. 5 is a schematic view of the structure of the bottom surface of a bearing plate in the nucleic acid isolation apparatus according to the embodiment of the present application;

FIG. 6 is a schematic diagram showing a structure of a second placement unit in the nucleic acid isolation apparatus according to the embodiment of the present application;

FIG. 7 is a schematic view showing the structure of a housing tank in section A of the nucleic acid isolation apparatus according to the embodiment of the present application.

In the figure:

1. a housing; 11. a motor; 12. a support member;

2. a sealing door; 21. a support plate; 22. a holding rod; 23. a glass plate;

3. a transmission section; 31. a mounting seat; 32. a chute; 33. a screw rod; 34. a first transmission block; 35. a bearing plate; 36. mounting a plate; 37. a first elastic connecting member; 38. a second transmission block;

4. a first placing section; 41. placing a rack; 42. a partition plate;

5. a transparent protective cover; 51. a slide rail; 52. sealing plates;

6. a second placing section; 61. placing a plate; 62. a slider; 63. a placement groove; 64. a limiting groove; 65. a second elastic connecting piece; 66. a connecting rod; 67. a limiting ring; 68. a handle.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The utility model provides a nucleic acid extraction appearance, refer to fig. 1 to 7, including casing 1, transmission portion 3 and transparent safety cover 5, transmission portion 3 is established in casing 1, transmission portion 3 includes base and bearing plate 35, bottom surface fixed connection in base and the casing 1, bearing plate 35 and base sliding connection, the first portion 4 of placing of fixedly connected with on the bearing plate 35, the first portion 4 of placing is along casing 1's longitudinal movement under transmission portion 3's the drive, transparent safety cover 5 establishes the lateral wall at casing 1, sliding connection has the second to place portion 6 in transparent safety cover 5.

The utility model provides a nucleic acid extraction instrument, through setting up transmission part 3, make first placing part 4 move longitudinally along casing 1 under the drive of transmission part 3, the medical staff of being convenient for can place the nucleic acid sample in first placing part 4 or extract from first placing part 4 outside casing 1, not restricted by casing 1 space, the operation of being convenient for; and through set up second portion 6 of placing at casing 1 lateral wall for more nucleic acid samples can be held temporarily to the nucleic acid extraction appearance, need keep in other places when the quantity of nucleic acid sample is more, improve nucleic acid sample's detection efficiency effectively, and second portion 6 of placing sets up in transparent safety cover 5, and the medical staff of being convenient for observes nucleic acid sample.

Specifically, in the above embodiment, referring to fig. 3 to 5, the base includes the mounting seat 31 and the sliding chute 32, the mounting seat 31 and the sliding chute 32 are respectively disposed on two sides of the bottom surface in the housing 1 along the longitudinal direction of the housing 1, the screw 33 is disposed in the mounting seat 31, the first transmission block 34 and the second transmission block 38 are respectively disposed on two sides of the bottom surface of the bearing plate 35, the first transmission block 34 is connected with the screw 33 in a threaded manner, the second transmission block 38 is connected with the sliding chute 32 in a sliding manner, the housing 1 is fixedly connected with the motor 11, and the motor 11 is connected with the screw 33 in a driving manner; the motor 11 drives the screw 33 to rotate, so as to drive the first transmission block 34 to move in the mounting seat 31 and the second transmission block 38 to move in the sliding slot 32, thereby driving the bearing plate 35 to move along the longitudinal direction of the housing 1. In this embodiment, the mounting seat 31 and the sliding groove 32 are disposed at two sides of the bottom surface in the housing 1 in parallel along the longitudinal direction of the housing 1, the motor 11 is connected to one side of the starting position of the housing 1 near the first transmission block 34 and the second transmission block 38, the motor 11 penetrates the housing 1 and is in driving connection with the screw 33 in the mounting seat 31, the motor 11 drives the screw 33 to rotate along its own axial direction, so as to drive the first transmission block 34 as a driving transmission block to move in the housing 1 along the longitudinal direction of the housing 31, and further to make the second transmission block 38 as a driven transmission block to keep the same moving speed as the first transmission block 34 in the sliding groove 32, and synchronously drive the bearing plate 35 to move in the longitudinal direction of the housing 1. Simultaneously, can be according to the specification and the actual demand of first portion of placing 4, can follow the vertical parallel arrangement of casing 1 a plurality of mount pads 31 that include lead screw 33, and then use more motor 11 drive bearing plate 35 and first portion of placing 4, have stronger drive power, can drive the removal of the first portion of placing 4 of bigger specification.

Further, referring to fig. 5, two mounting plates 36 are fixedly connected to two sides of the bottom surface of the bearing plate 35 along the longitudinal direction of the housing 1, the two mounting plates 36 are respectively disposed opposite to the first transmission block 34 and the second transmission block 38, and a first elastic connection member 37 is connected between each mounting plate 36 and the first transmission block 34 and between each mounting plate 36 and the second transmission block 38. In this embodiment, because the first transmission block 34 and the second transmission block 38 respectively slide in the mounting seat 31 and the chute 32 to drive the bearing plate 35 to move, the mounting plate 36 respectively opposite to the first transmission block 34 and the second transmission block 38 is arranged, and the first elastic connecting piece 37 is connected between the mounting plate 36 and the two transmission blocks, on one hand, the supporting and buffering functions can be effectively realized, on the other hand, the speed limiting function is realized on the bearing plate 35, the bearing plate 35 is prevented from moving too fast in the moving process, when the bearing plate 35 stops instantly due to the closing of the motor 11, the test tube bottle of the nucleic acid sample is toppled over due to inertia, and the irretrievable loss is caused.

Specifically, in the above embodiment, referring to fig. 2 to 4, the first placing portion 4 includes the placing frame 41, the placing frame 41 is fixedly connected to the bearing plate 35, and a plurality of partition plates 42 are uniformly arranged in the placing frame 41 along the longitudinal direction of the housing 1. In this embodiment, the overall profile of the placing frame 41 is a cuboid, the bottom surface of the placing frame 41 is matched with the area shape of the supporting surface of the bearing plate 35, a plurality of partition plates 42 are fixedly and evenly distributed along the longitudinal direction of the casing 1, the partition plates 42 are also rectangular in shape, the placing frame 41 is vertically divided into a plurality of placing cavities with equal volumes by the partition plates 42, the placing cavities are used for placing nucleic acid samples, and the setting of the partition plates 42 can effectively improve the accuracy of nucleic acid sample detection.

Specifically, in the above embodiment, referring to fig. 1, one end of the housing 1 is provided with a first extraction opening, the first placing portion 4 passes through the first extraction opening along the longitudinal movement of the housing 1, the first extraction opening is hinged with a sealing door 2, a glass plate 23 is embedded in the sealing door 2, and a handle assembly is fixedly connected to one side of the sealing door 2 away from the inside of the housing 1. In this embodiment, medical staff has passed first extraction mouth through pulling the handle subassembly in order to open sealing door 2, first portion of placing 4 has passed along the longitudinal movement of casing 1 under the drive of transmission portion 3 for first portion of placing 4 is located the outside of casing 1, and the medical staff of being convenient for directly draws or places the nucleic acid sample outside casing 1, and convenient operation is embedded to have glass plate 23 at sealing door 2, makes medical staff can just directly observe the nucleic acid sample that is located the casing 1 inside outside casing 1, and is simple and directly perceived.

Further, referring to fig. 1 and 2, the handle assembly includes two support plates 21 disposed in parallel along the lateral direction of the sealing door 2, and a holding rod 22 is connected between the two support plates 21; when the sealing door 2 is opened and rotated to be parallel to the ground, the distance between the sealing door 2 and the ground is equal to the length of the support plate 21. In this embodiment, the sealing door 2 is hinged to the side of the first extraction opening close to the ground, the medical staff opens the sealing door 2 by pulling the holding rod 22, when the sealing door 2 is rotated to be parallel to the ground, because the distance between the sealing door 2 and the ground is equal to the length of the support plate 21, the two support plates 21 support the sealing door 2, so that the sealing door 2 is parallel to the ground, and the sealing door 2 is also flush with the bottom surface inside the housing 1, so that the first placing part 4 can move through the first extraction opening, and the operation is easy.

Specifically, in the above embodiment, referring to fig. 1, 2 and 6, a second extraction opening is opened at one end of the transparent protection cover 5, and a sealing plate 52 is hinged at the second extraction opening; the inner wall of the transparent protection cover 5 is provided with a slide rail 51 along the longitudinal direction of the housing 1, and the second placing part 6 moves along the longitudinal direction of the housing 1 to pass through the second extraction opening. In the present embodiment, the medical staff moves the second placing portion 6 by opening the sealing plate 52 so that the second placing portion 6 is also moved to the outside of the transparent protective cover 5 through the second extraction port, facilitating the operation. Since the second placing portion 6 is mainly used for placing a few temporary and small amount of nucleic acid samples, and the whole volume of the second placing portion 6 is smaller than that of the first placing portion 4, the second placing portion 6 can be slidably connected with the slide rail 51 arranged on the inner wall of the transparent protective cover 5, so that the second placing portion 6 can easily move along the longitudinal direction of the housing 1, and the connection mode of the second placing portion 6 is simple in structure, easy to implement and easy to operate.

Further, referring to fig. 6 and 7, the second placing portion 6 includes a placing plate 61, and a handle 68 is fixedly connected to one side of the placing plate 61 near the second extraction opening; the both sides of placing board 61 are equal fixedly connected with slider 62, slider 62 and slide rail 51 sliding connection, and a plurality of standing grooves 63 have been seted up along length direction equipartition in the top of placing board 61. In the present embodiment, after the medical staff opens the sealing plate 52, the placing plate 61 can be moved by pulling the handle 68, and the operation is simple and labor-saving; the sliding blocks 62 which are slidably connected with the sliding rails 51 are fixedly connected to two sides of the placing plate 61, so that the placing plate 61 can move more stably; the standing groove 63 is opened at the top of placing the board 61 for place the nucleic acid sample, and standing groove 63 equipartition sets up, and the distance between two adjacent standing grooves 63 equals for the nucleic acid sample is put neatly and leaves sufficient space between the adjacent nucleic acid sample, and the medical staff of being convenient for operates.

Further, referring to fig. 7, limiting grooves 64 are formed in the two sides of the placing groove 63 in any diameter direction, a second elastic connecting piece 65 is arranged in the limiting groove 64 in the length direction of the limiting groove 64, the second elastic connecting piece 65 is connected with a limiting ring 67, the limiting ring 67 is semicircular, two opposite limiting rings 67 on the same diameter of the placing groove 63 are folded to form a limiting ring, and the diameter of the inner wall of the limiting ring is equal to that of the inner wall of the placing groove 63. In this embodiment, a connecting rod 66 is further connected between the second elastic connecting piece 65 and the limiting ring 67, when the medical staff opens the sealing plate 52 and pulls the placing plate 61 out of the transparent protection cover 5 by pulling the handle 68, the semicircular limiting ring 67 is pushed along the length direction of the limiting grooves 64 on both sides of the placing groove 63, at this time, the limiting ring 67 drives the second elastic connecting piece 65 to be squeezed and contracted through the connecting rod 66, and then the test tube bottle of the nucleic acid sample to be detected is inserted into the placing groove 63, after the medical staff loosens the hands, the second elastic connecting piece 65 is no longer under pressure, the connecting rod 66 and the limiting ring 67 are rapidly driven to rebound, so that the limiting rings 67 on both sides of the placing groove 63 are folded to form a complete limiting ring, the test tube bottle of the nucleic acid sample is clamped and fixed, then the placing plate 61 is pushed into the transparent protection cover 5 by using the handle 68, and the sealing plate 52 is closed to store the nucleic acid sample in the second placing part 6; and when medical personnel need take the nucleic acid sample, will place board 61 and take out from transparent safety cover 5, direct along standing groove 63 axial pull out the test tube bottle of nucleic acid sample can, avoid waiting the nucleic acid in the nucleic acid extraction appearance to detect the back, need place the department from special sample, take out the sample and carry out the problem that detects, improved the work efficiency to nucleic acid sample detection effectively. Specifically, the stopper grooves 64 on both sides of all the placement grooves 63 on the top of the second placement section 6 are provided along the longitudinal direction of the placement plate 61, i.e., are kept parallel in the longitudinal direction of the housing 1, for the convenience of the medical staff to handle.

Specifically, in the above embodiment, referring to fig. 3, the supporting pieces 12 are fixedly connected to the four corners of the bottom surface of the housing 1. In this embodiment, four support members 12 are respectively disposed at four corners of the bottom surface of the housing 1 for stably supporting the housing 1, and the arrangement of the support members 12 makes the housing 1 more stable during the installation and use processes, thereby improving the stability of the overall structure of the nucleic acid extractor.

The operation steps of placing and extracting the nucleic acid sample by using the nucleic acid detector provided by the application are as follows:

1. the sealing door 2 hinged to the shell 1 is opened by pulling the handle assembly, the sealing door 2 is rotated to be parallel to the ground, and the supporting plate 21 in the handle assembly supports the sealing door 2, so that the sealing door 2 is flush with the bottom surface in the shell 1;

2. the motor 11 connected with the shell 1 is opened, the screw rod 33 is driven to rotate to drive the first transmission block 34 and the second transmission block 38 to respectively move in the mounting seat 31 and the sliding groove 32 along the direction of the shell 1, so that the bearing plate 35 and the first placing part 4 are driven to move until the first placing part 4 moves out of the shell 1 through the first extraction opening, and the motor 11 is closed;

3. placing the test tube bottles of the nucleic acid samples in a plurality of placing cavities separated by a plurality of partition plates 42 in a placing rack 41, turning on the motor 11 again, retracting the first placing part 4 into the shell 1, and closing the sealing door 2;

4. the sealing plate 52 is opened, the placing plate 61 is pulled by the handle 68 to move out of the transparent protective cover 5 through the second extraction opening, the limiting ring 67 is pushed along the length direction of the limiting groove 64, the test tube bottle of the nucleic acid sample to be detected is inserted into the placing groove 63, and after the hand is loosened, the second elastic connecting piece 65 drives the connecting rod 66 and the limiting ring 67 to rebound, so that the limiting rings 67 on the two sides of the placing groove 63 clamp and fix the test tube bottle of the nucleic acid sample;

5. the placing plate 61 is pushed into the transparent protective cover 5 by the handle 68, and the sealing plate 52 is closed to store the nucleic acid sample in the second placing section 6;

6. in the extraction process, it is necessary to open the sealing plate 52 and the sealing door 2 again to extract the previously deposited nucleic acid sample vial from the first placing unit 4 and the second placing unit 6, respectively.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A nucleic acid extractor, comprising:

a housing (1);

the transmission part (3) is arranged in the shell (1), the transmission part (3) comprises a base and a bearing plate (35), the base is fixedly connected with the bottom surface in the shell (1), the bearing plate (35) is in sliding connection with the base, a first placing part (4) is fixedly connected to the bearing plate (35), and the first placing part (4) is driven by the transmission part (3) to move along the longitudinal direction of the shell (1);

transparent safety cover (5), establish transparent safety cover (5) the lateral wall of casing (1), sliding connection has second portion of placing (6) in transparent safety cover (5).

2. The nucleic acid extractor according to claim 1, wherein the base includes a mounting seat (31) and a sliding chute (32), the mounting seat (31) and the sliding chute (32) are respectively arranged on two sides of the bottom surface in the housing (1) along the longitudinal direction of the housing (1), a screw rod (33) is arranged in the mounting seat (31), a first transmission block (34) and a second transmission block (38) are respectively arranged on two sides of the bottom surface of the bearing plate (35), the first transmission block (34) is in threaded connection with the screw rod (33), the second transmission block (38) is in sliding connection with the sliding chute (32), a motor (11) is fixedly connected with the housing (1), and the motor (11) is in driving connection with the screw rod (33); the motor (11) drives the screw rod (33) to rotate so as to drive the first transmission block (34) to move in the mounting seat (31) and the second transmission block (38) to move in the sliding groove (32), and further drive the bearing plate (35) to move along the longitudinal direction of the shell (1).

3. The nucleic acid extraction apparatus according to claim 2, wherein two mounting plates (36) are fixedly connected to two sides of the bottom surface of the bearing plate (35) along the longitudinal direction of the housing (1), the two mounting plates (36) are respectively disposed opposite to the first transmission block (34) and the second transmission block (38), and first elastic connecting members (37) are connected between the mounting plates (36) and the first transmission block (34) and between the mounting plates (36) and the second transmission block (38).

4. The nucleic acid extractor according to claim 1, wherein the first placement unit (4) includes a placement frame (41), the placement frame (41) is fixedly connected to the bearing plate (35), and a plurality of partition plates (42) are uniformly disposed in the placement frame (41) along a longitudinal direction of the housing (1).

5. The nucleic acid extractor of claim 1, wherein one end of the housing (1) is provided with a first extraction opening, the first placing portion (4) moves along the longitudinal direction of the housing (1) to penetrate through the first extraction opening, the first extraction opening is hinged with a sealing door (2), a glass plate (23) is embedded in the sealing door (2), and a handle assembly is fixedly connected to one side of the sealing door (2) far away from the inside of the housing (1).

6. The nucleic acid extractor as claimed in claim 5, wherein the handle assembly comprises two support plates (21) disposed in parallel in a lateral direction of the sealing door (2), and a holding rod (22) is connected between the two support plates (21); when the sealing door (2) is opened and rotated to be parallel to the ground, the distance between the sealing door (2) and the ground is equal to the length of the support plate (21).

7. The nucleic acid extractor according to claim 1, wherein one end of the transparent protective cover (5) is provided with a second extraction opening, and a sealing plate (52) is hinged at the second extraction opening; the inner wall of the transparent protection cover (5) is provided with a sliding rail (51) along the longitudinal direction of the shell (1), and the second placing part (6) passes through the second extraction opening along the longitudinal movement of the shell (1).

8. The nucleic acid extraction apparatus according to claim 7, wherein the second placement section (6) includes a placement plate (61), and a handle (68) is fixedly attached to a side of the placement plate (61) near the second extraction port; the two sides of the placing plate (61) are fixedly connected with sliding blocks (62), the sliding blocks (62) are in sliding connection with the sliding rails (51), and a plurality of placing grooves (63) are uniformly formed in the top of the placing plate (61) along the length direction.

9. The nucleic acid extraction instrument according to claim 8, wherein a limiting groove (64) is formed in each of two sides of the placement groove (63) in any diameter direction, a second elastic connecting piece (65) is arranged in the limiting groove (64) in the length direction of the limiting groove (64), a limiting ring (67) is connected to the second elastic connecting piece (65), the limiting ring (67) is semicircular in shape, two oppositely arranged limiting rings (67) on the same diameter of the placement groove (63) are folded to form a limiting ring, and the diameter of the inner wall of the limiting ring is equal to the diameter of the inner wall of the placement groove (63).

10. The nucleic acid extractor according to claim 1, wherein the support member (12) is fixedly connected to four corners of the bottom surface of the housing (1).

Images