CN220812373U

CN220812373U - Electromagnetic magnetic rack

Info

Publication number: CN220812373U
Application number: CN202322431047.0U
Authority: CN
Inventors: 杨志栋; 马志远; 李振辉; 周怡玮
Original assignee: Wuhan Kangshengbeitai Biotechnology Co ltd
Current assignee: Wuhan Kangshengbeitai Biotechnology Co ltd
Priority date: 2023-09-07
Filing date: 2023-09-07
Publication date: 2024-04-19
Anticipated expiration: 2033-09-07

Abstract

The utility model provides an electromagnetic magnetic rack, which belongs to the technical field of magnetic racks, and comprises: the base is provided with a vertical plate vertically on the upper side; the electromagnets are arranged on the surface of the vertical plate, and the electromagnets are electrified to generate a magnetic field; the support plate is arranged at the upper end of the vertical plate and is suitable for placing a test tube, and when the test tube is positioned on the support plate, the electromagnet corresponds to the test tube so that the electromagnet can adsorb magnetic beads in the test tube; and the timing assembly is arranged on the supporting plate. The timing assembly is moved upwards for a certain distance, at the moment, the first metal sheet is contacted with the second metal sheet, the electromagnet is in an electrified state, and a magnetic field is generated to adsorb magnetic beads in the test tube; when the timing assembly moves downwards to the inside of the first groove, the first metal sheet and the second metal sheet are separated, the electromagnet is in a power-off state, no magnetic field is generated, the timing effect is achieved, and great convenience is provided for extracting nucleic acid.

Description

Electromagnetic magnetic rack

Technical Field

The utility model belongs to the technical field of magnetic force frames, and particularly relates to an electromagnetic magnetic force frame.

Background

The magnetic bead method is to crack sample with the cracking liquid to adsorb the nucleic acid molecule to the surface of magnetic bead to form magnetic bead-DNA polymer while the protein and other impurity are not adsorbed and remain in the solution. After reacting for a certain time, separating the magnetic bead-DNA polymer from the liquid under the action of a magnetic field, recovering the magnetic bead-DNA polymer, and washing with a washing liquid to obtain pure DNA. The magnetic rack is needed in the process of extracting nucleic acid by the magnetic bead method, the time for adsorbing the magnetic beads by the magnet is usually needed to be manually measured in the process of extracting nucleic acid, and the test tube is separated from the magnetic rack when a certain time is reached, so that the magnetic beads in the test tube are separated from the magnet, and the magnetic force of the magnetic beads is lost.

The existing magnetic rack has no timing function in the use process, the magnet is usually a permanent magnet, when a certain time is reached, the magnetic beads still receive the adsorption force of the magnet, and the magnetic beads can only lose the adsorption force of the magnet by separating the test tube from the magnetic rack, so that great inconvenience is brought to the extraction of nucleic acid.

Disclosure of utility model

The utility model aims to provide an electromagnetic magnetic rack, which aims to solve the problem that the existing magnetic rack in the prior art does not have a timing function in the use process, and when a certain time is reached, magnetic beads still receive the adsorption force of a magnet, so that inconvenience is brought to the extraction of nucleic acid.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the electromagnetic magnetic rack comprises:

the base is provided with a vertical plate vertically on the upper side;

the electromagnets are arranged on the surface of the vertical plate, and the electromagnets are electrified to generate a magnetic field;

The support plate is arranged at the upper end of the vertical plate and is suitable for placing a test tube, and when the test tube is positioned on the support plate, the electromagnet corresponds to the test tube so that the electromagnet can adsorb magnetic beads in the test tube;

the timing assembly is installed in the supporting plate, the timing assembly can move downwards along the vertical direction, and when the lower end of the timing assembly is in contact with the base, the electromagnet is in a power-off state, and the electromagnet does not generate a magnetic field to enable the magnetic beads to lose the adsorption force.

According to the technical scheme, the base is provided with a plurality of first grooves on the upper surface, the base is internally provided with a mounting groove, a first metal sheet and a second metal sheet are arranged in the mounting groove, the first metal sheet is fixedly connected with the base, and the second metal sheet can move in the vertical direction in a mounting space.

According to a further technical scheme, the second metal sheet is connected with the mounting groove through the spring, the upper end of the spring is connected with the second metal sheet, the lower end of the spring is connected with the bottom wall of the mounting groove, the first metal sheet and the second metal sheet are arranged corresponding to the first groove, the first metal sheet and the second metal sheet are connected with leads, and the electromagnet is electrically connected with an external direct current power supply through the leads.

According to a further technical scheme, the timing assembly comprises a cylindrical body, a spiral groove is formed in the surface of the cylindrical body, a first through hole is formed in the surface of the supporting plate, the first through hole faces the first groove, a protrusion is arranged on the inner wall of the first through hole and is matched with the spiral groove, and when the cylindrical body is inserted into the first through hole, the protrusion is located in the spiral groove.

According to a further technical scheme, a sliding column is rotatably connected to the top of the cylindrical body, the diameter of the sliding column is the same as that of the cylindrical body, and a handle is arranged on the sliding column.

According to a further technical scheme, graduation marks are arranged on the surface of the cylindrical body.

According to a further technical scheme, the base is further provided with a power plug, and the power plug is suitable for being connected with a direct current power supply and supplies direct current to the electromagnet.

According to a further technical scheme, a second through hole is further formed in the surface of the supporting plate, the second through hole is arranged corresponding to the first through hole, and the second through hole is used for placing a test tube.

Compared with the prior art, the utility model has the beneficial effects that:

The timing assembly is moved upwards for a certain distance, at the moment, the first metal sheet is contacted with the second metal sheet, the electromagnet is in an electrified state, and a magnetic field is generated to adsorb magnetic beads in the test tube; when the timing assembly moves downwards to the inside of the first groove, the first metal sheet and the second metal sheet are separated, the electromagnet is in a power-off state, no magnetic field is generated, the timing effect is achieved, and great convenience is provided for extracting nucleic acid.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

fig. 1 is a schematic perspective view of an embodiment of the present utility model.

Fig. 2 is a schematic perspective view of another embodiment of the present utility model.

Fig. 3 is a schematic structural diagram of another embodiment of the present utility model.

Fig. 4 is a schematic view showing the surface structure of a support plate according to an embodiment of the present utility model.

Fig. 5 is a schematic view of sheet metal connection according to an embodiment of the present utility model.

FIG. 6 is a schematic diagram of a timing assembly according to an embodiment of the present utility model.

Fig. 7 is a schematic diagram of a timing assembly according to a second embodiment of the present utility model.

In the figure: 10. a base; 11. a power plug; 12. a first groove; 13. a spring; 14. a wire; 15. a first metal sheet; 16. a second metal sheet; 20. a vertical plate; 21. an electromagnet; 30. A support plate; 31. a first through hole; 311. a protrusion; 32. a second through hole; 40. a timing assembly; 41. a spiral groove; 42. a spool; 44. a handle; 45. a cylindrical body; 47. a second round tube; 48. a first round tube; 49. an elastic thread.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Example 1

Referring to fig. 1-6, an electromagnetic magnetic rack includes a base 10, a vertical plate 20 is vertically installed on the upper side of the base 10, a plurality of electromagnets 21 are installed on the surface of the vertical plate 20, the electromagnets 21 are electrified to generate a magnetic field, a support plate 30 is horizontally installed on the upper end of the vertical plate 20, the support plate 30 is used for placing test tubes, and when the test tubes are located on the support plate 30, the electromagnets 21 correspond to the test tubes so that the electromagnets 21 can absorb magnetic beads in the test tubes. The timing assembly 40 is further arranged on the supporting plate 30, the timing assembly 40 can move downwards along the vertical direction, when the lower end of the timing assembly 40 is in contact with the base 10, the electromagnet 21 is in a power-off state, the electromagnet does not generate a magnetic field, and the magnetic beads lose the adsorption force, so that great convenience is provided for extracting nucleic acid.

The upper surface of base 10 is provided with a plurality of first recesses 12, and the inside of base 10 has the mounting groove, is provided with first sheetmetal 15 and second sheetmetal 16 in the mounting groove, and first sheetmetal 15 and base 10 fixed connection, second sheetmetal 16 can follow vertical direction in the installation space, and specifically, second sheetmetal 16 is connected with the mounting groove through spring 13, and the upper end and the second sheetmetal 16 of spring 13 are connected, and the lower extreme and the diapire of mounting groove of spring 13 are connected. The first metal sheets 15 and the second metal sheets 16 are arranged corresponding to the first grooves 12, in other words, the first metal sheets 15 and the second metal sheets 16 are arranged at each first groove 12, one end of each second metal sheet 16 extends to the inside of each first groove 12, the first metal sheets 15 and the second metal sheets 16 are connected with the conducting wires 14, the electromagnets 21 are electrically connected with an external direct current power supply through the conducting wires 14, the specific connection mode is the prior art, and specific circuits are not described herein.

In a natural state, the first metal sheet 15 is in contact with the second metal sheet 16, the electromagnet 21 is in an electrified state, and a magnetic field is generated to be capable of adsorbing magnetic beads; when the timing component 40 is located inside the first groove 12, the timing component 40 presses down the second metal sheet 16, the second metal sheet 16 moves downward to be separated from the first metal sheet 15, the electromagnet 21 is in a power-off state, and the electromagnet 21 cannot adsorb the magnetic beads.

The timing assembly 40 comprises a cylindrical body 45, a spiral groove 41 is formed in the surface of the cylindrical body 45, a first through hole 31 is formed in the surface of the supporting plate 30, the first through hole 31 is opposite to the first groove 12, a protrusion 311 is formed in the inner wall of the first through hole 31, the protrusion 311 is matched with the spiral groove 41, when the cylindrical body 45 is inserted into the first through hole 31, the protrusion 311 is located in the spiral groove 41, under the action of gravity of the timing assembly 40, the timing assembly 40 moves downwards while rotating until the lower end of the timing assembly 40 is located in the first groove 12, and it can be appreciated that time T required by the timing assembly 40 in the descending process is proportional to the length L of the bottom of the cylindrical body 45 from the bottom of the first groove 12. Thus, the timing function can be achieved by adjusting the distance L between the bottom of the cylindrical body 45 and the bottom of the first recess 12.

The top of the cylindrical body 45 is rotationally connected with the sliding column 42, the diameter of the sliding column 42 is the same as that of the cylindrical body 45, the sliding column 42 is provided with the handle 44, when the cylindrical body 45 needs to be moved upwards, the sliding column 42 is lifted through the handle 44, the cylindrical body 45 can be lifted upwards rapidly, the surface of the cylindrical body 45 is provided with scale marks, the length of the cylindrical body 45 away from the first groove 12 can be adjusted through the scale marks, and the time for adjusting the electrifying of the electromagnet 21 is reached.

The base 10 is further provided with a power plug 11, the power plug 11 being connected to an external dc power supply, supplying a dc current to each electromagnet 21. The surface of the support plate 30 is further provided with a second through hole 32, the second through hole 32 is provided corresponding to the first through hole 31, and the second through hole 32 is used for placing a test tube.

In this embodiment, during use, the timing assembly 40 is moved upward a certain distance, and at this time, the first metal sheet 15 and the second metal sheet 16 are in contact, the electromagnet 21 is in an energized state, and a magnetic field is generated to be capable of adsorbing the magnetic beads in the test tube; when the timing assembly 40 moves downwards to the inside of the first groove 12, the second metal sheet 16 and the first metal sheet 15 are separated, the electromagnet 21 is in a power-off state, no magnetic field is generated, the timing effect is achieved, and great convenience is provided for extracting nucleic acid.

Example two

Referring to fig. 7, on the basis of the first embodiment, the surface of the support plate 30 has a first through hole 31, the first through hole 31 is opposite to the first groove 12, the timing assembly 40 includes a first circular tube 48 and a second circular tube 47, the first circular tube 48 is inserted into the first through hole 31, a support edge is disposed at an upper end of the first circular tube 48 for supporting the first circular tube 48, the second circular tube 47 is sleeved at a lower end of the first circular tube 48, an upper end of the second circular tube 47 is connected with the first circular tube 48 through an elastic wire 49, one end of the elastic wire 49 is connected with the first circular tube 48, and the other end of the elastic wire 49 is connected with the second circular tube 47. When the first circular tube 48 is inserted into the first through hole 31, the bottom of the second circular tube 47 is not in contact with the second metal sheet 16.

The first circular tube 48 is filled with sand, the sand is fine sand, a through hole is formed in the bottom of the sand, the sand flows into the second circular tube 47 through the through hole, the second circular tube 47 moves downwards and contacts with the second metal sheet 16 under the action of gravity, the second metal sheet 16 is separated from the first metal sheet 15, and the electromagnet 21 is in a power-off state and has a timing function. It will be appreciated that by adjusting the length of the elastic wire 49, the time required for the second circular tube 47 to move down into contact with the second metal sheet 16 can be adjusted.

Claims

1. An electromagnetic stand, comprising:

The base (10), the upper side of the base (10) is vertically provided with a vertical plate (20);

An electromagnet (21), wherein a plurality of electromagnets (21) are arranged on the surface of the vertical plate (20), and the electromagnets (21) are electrified to generate a magnetic field;

The support plate (30), the support plate (30) is arranged at the upper end of the vertical plate (20), the support plate (30) is suitable for placing test tubes, and when the test tubes are positioned on the support plate (30), the electromagnets (21) correspond to the test tubes so that the electromagnets (21) can adsorb magnetic beads in the test tubes;

the timing assembly (40) is installed on the supporting plate (30), the timing assembly (40) can move downwards along the vertical direction, and when the lower end of the timing assembly (40) is in contact with the base (10), the electromagnet (21) is in a power-off state, and the electromagnet does not generate a magnetic field to enable the magnetic beads to lose the adsorption capacity.

2. An electromagnetic ledge as defined in claim 1, wherein: the upper surface of base (10) is provided with a plurality of first recesses (12), the inside of base (10) has the mounting groove, is provided with first sheetmetal (15) and second sheetmetal (16) in the mounting groove, and first sheetmetal (15) and base (10) fixed connection, second sheetmetal (16) can follow vertical direction in the installation space and remove.

3. An electromagnetic ledge as defined in claim 2, wherein: the second metal sheet (16) is connected with the mounting groove through the spring (13), the upper end of the spring (13) is connected with the second metal sheet (16), the lower end of the spring (13) is connected with the bottom wall of the mounting groove, the first metal sheet (15), the second metal sheet (16) and the first groove (12) are correspondingly arranged, the first metal sheet (15) and the second metal sheet (16) are both connected with the conducting wires (14), and the electromagnet (21) is electrically connected with an external direct current power supply through the conducting wires (14).

4. An electromagnetic ledge as defined in claim 1, wherein: the timing assembly (40) comprises a cylindrical body (45), a spiral groove (41) is formed in the surface of the cylindrical body (45), a first through hole (31) is formed in the surface of the supporting plate (30), the first through hole (31) is opposite to the first groove (12), a protrusion (311) is arranged on the inner wall of the first through hole (31), the protrusion (311) is matched with the spiral groove (41), and when the cylindrical body (45) is inserted into the first through hole (31), the protrusion (311) is located in the spiral groove (41).

5. An electromagnetic ledge as defined in claim 4, wherein: the top of the cylindrical body (45) is rotatably connected with a sliding column (42), the diameter of the sliding column (42) is the same as that of the cylindrical body (45), and a handle (44) is arranged on the sliding column (42).

6. An electromagnetic ledge as defined in claim 5, wherein: the surface of the cylindrical body (45) is provided with graduation marks.

7. An electromagnetic ledge as defined in claim 1, wherein: the timing assembly (40) comprises a first circular tube (48) and a second circular tube (47), a supporting edge is arranged at the upper end of the first circular tube (48), the second circular tube (47) is sleeved at the lower end of the first circular tube (48), and the upper end of the second circular tube (47) is connected with the first circular tube (48) through an elastic wire (49).

8. An electromagnetic ledge as defined in claim 1, wherein: the base (10) is also provided with a power plug (11), and the power plug (11) is suitable for being connected with a direct current power supply and supplying direct current to the electromagnet (21).

9. An electromagnetic ledge as defined in claim 1, wherein: the surface of backup pad (30) still is provided with second through-hole (32), and second through-hole (32) set up with first through-hole (31) corresponds, and second through-hole (32) are used for placing the test tube.