Pipetting magnetic rack for placing test tube

Abstract

A pipetting magnetic frame for placing a test tube comprises a bottom plate, a ferromagnetic cylinder is installed on the bottom plate, a conical groove is formed in the upper end of the ferromagnetic cylinder in an opening mode, the upper end of the conical groove is a large end, the test tube is placed on the ferromagnetic cylinder, and magnetic beads can be located at the bottom of the test tube through the ferromagnetic cylinder, so that magnetic bead suction operation is facilitated. Protruding parts are arranged on the two sides of the bottom plate, supporting rods are arranged on the protruding parts in an upward extending mode, the supporting rods are sleeved with movable plates, kidney-shaped holes are formed in the movable plates, the supporting rods penetrate through the kidney-shaped holes, arc-shaped plates are arranged at the inner side ends of the movable plates, and semicircular magnetic rings are installed on the arc-shaped plates. By means of the pair of semicircular magnetic rings which are movably arranged, when the semicircular magnetic rings are closed and move downwards, magnetic beads can move downwards, and therefore the situation that the magnetic beads are dispersed and distributed in an extracting solution, and the suction operation of the extracting solution is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of DNA extraction, in particular to a test tube placement and liquid transfer magnetic rack. Background Art

[0002] Magnetic bead kits have significant effects in DNA extraction technology and are therefore widely used. However, when extracting the extract, the magnetic beads distributed in the extract cannot be completely precipitated at the bottom of the test tube, which can easily cause poor suction during the extraction operation. Although the magnetic beads are currently adsorbed by placing the test tube on a strong magnetic table, this method can only ensure that the magnetic beads at the bottom are not sucked out, but it cannot effectively prevent the problem of magnetic beads distributed in the extract from being sucked out. Utility Model Content

[0003] The utility model provides a test tube placement and liquid transfer magnetic rack to solve the above-mentioned deficiencies in the prior art, can make the magnetic beads move downward, and ensure that there are no dispersed magnetic beads in the extract, thereby facilitating the operation of sucking out the magnetic beads, and has strong practicality.

[0004] In order to achieve the purpose of this utility model, the following technologies are proposed:

[0005] A test tube placement and liquid transfer magnetic rack comprises a bottom plate, a strong magnetic column is mounted on the bottom plate, a conical groove is formed at the upper end of the strong magnetic column, the upper end of the conical groove is a large end, and the test tube is placed on the strong magnetic column. The strong magnetic column can make magnetic beads located at the bottom of the test tube, thereby facilitating the operation of sucking the magnetic beads.

[0006] The bottom plate is provided with convex parts on both sides, and the convex parts are provided with supporting rods extending upward, and a movable plate is sleeved on the supporting rods, and a waist-shaped hole is opened on the movable plate, and the supporting rod is inserted into the waist-shaped hole, and an arc plate is provided on the inner side of the movable plate, and a semicircular magnetic ring is installed on the arc plate. Through the pair of semicircular magnetic rings that are movably arranged, when they are closed and move downward, the magnetic beads can be moved downward, thereby preventing the magnetic beads from being dispersed in the extract and affecting the suction operation of the extract.

[0007] Furthermore, a sleeve is provided at the outer end of the movable plate, a circular groove is provided in the sleeve, a spring is provided in the circular groove, a movable rod is passed through the spring, the movable rod passes through the outer end of the sleeve, an end cap is provided at the inner end of the movable rod, the end cap is located at the inner end of the spring, an insertion rod is provided at the inner end of the end cap, a vertical groove is provided on the support rod, the insertion rod passes through the vertical groove, and when the insertion rod is inserted in the vertical groove, it guides the movement of the semicircular magnetic ring, thereby facilitating the downward movement of the magnetic beads so that the magnetic beads are located at the bottom of the test tube. The limiting function can also prevent the semicircular magnetic ring from causing wear to the test tube when it moves.

[0008] Furthermore, a pull cap is provided at the outer end of the movable rod, and the pull cap facilitates the extraction of the insertion rod, and after extraction, the semicircular magnetic ring is conveniently rotated outward, thereby facilitating the placement operation of the test tube.

[0009] Furthermore, a slot is provided at the upper end of the support rod, and the insertion rod can be inserted into the slot to support the semicircular magnetic ring, thereby facilitating later use.

[0010] Further, the upper end of the test tube is provided with a rubber plug, the rubber plug is provided with a vent hole, the upper end of the rubber plug is provided with an upper cylinder, the upper end of the upper cylinder is provided with an upper hole, the lower end of the upper hole is connected with a conical hole, the lower end of the conical hole is connected with a lower hole, the lower hole runs through the lower end of the rubber plug, a straw is passed through the lower hole, the lower end of the straw is provided with a plurality of holes, a connecting tube is provided in the upper hole, a conical shell is provided at the lower end of the connecting tube, the conical shell is located in the conical hole, an internal threaded ring is coaxially provided at the upper end of the connecting tube, an external connecting tube is provided in the internal threaded ring, an internal suction head is provided at the inner side end of the external connecting tube, the internal suction head is a funnel-shaped structure, and a plurality of suction eyes are provided on the conical wall of the internal suction head. When the extract is sucked by the pipette, the suction eye on the internal suction head can be connected with the straw, so as to facilitate the suction of the extract, and when not sucking, the suction eye can be blocked by the conical shell, so as to avoid contamination of the extract.

[0011] Furthermore, the lower end of the straw is a conical structure, and the lower end of the straw is a small end, so that the straw can be inserted into the magnetic beads easily.

[0012] The advantages of the above technical solution are:

[0013] The utility model can carry out bottom processing on the magnetic beads, thereby preventing the diffusely distributed magnetic beads from affecting the suction operation and also preventing the extraction liquid from being polluted. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0015] Figure 1 A three-dimensional structural diagram of one embodiment is shown.

[0016] Figure 2 A structural diagram of a frame of one embodiment is shown.

[0017] Figure 3 A cross-sectional view of a frame according to one embodiment is shown.

[0018] Figure 4 A cross-sectional view of one embodiment is shown.

[0019] Figure 5 An enlarged view of A is shown. DETAILED DESCRIPTION

[0020] like Figure 1~Figure 5 As shown, a test tube placement and liquid transfer magnetic rack comprises a bottom plate 1, on which a ferromagnetic column 2 is mounted, and the upper end of the ferromagnetic column 2 is openly formed with a conical groove, the upper end of the conical groove is a large end, and the test tube is placed on the ferromagnetic column 2. Both sides of the bottom plate 1 are provided with convex parts 10, and the convex parts 10 are provided with support rods 3 extending upward, and a movable plate 32 is sleeved on the support rod 3, and a waist-shaped hole 33 is opened on the movable plate 32, and the support rod 3 passes through the waist-shaped hole 33, and an arc plate 35 is provided at the inner side end of the movable plate 32, and a semicircular magnetic ring 36 is mounted on the arc plate 35. A sleeve 34 is provided at the outer end of the movable plate 32, and a circular groove is opened in the sleeve 34, and a spring 39 is provided in the circular groove, and a movable rod 37 is passed through the spring 39, and a pull cap 38 is provided at the outer end of the movable plate 32. The movable rod 37 passes through the outer end of the sleeve 34, and the inner end of the movable rod 37 is provided with an end cap 40, and the end cap 40 is located at the inner end of the spring 39. The inner end of the end cap 40 is provided with an insertion rod 41, and a vertical groove 30 is opened on the support rod 3. The insertion rod 41 passes through the vertical groove 30, and the upper end of the support rod 3 is provided with a slot 31.

[0021] The upper end of the test tube is provided with a rubber plug 5, and the upper end of the rubber plug 5 is provided with an upper cylinder 50. The upper end of the upper cylinder 50 is provided with an upper hole, and the lower end of the upper hole is connected with a tapered hole, and the lower end of the tapered hole is connected with a lower hole, which runs through the lower end of the rubber plug 5. A straw 6 is passed through the lower hole, and the lower end of the straw 6 is a tapered structure, and the lower end of the straw 6 is a small end. A plurality of holes are provided at the lower end of the straw 6, and a connecting tube 61 is provided in the upper hole, and a tapered shell 60 is provided at the lower end of the connecting tube 61, and the tapered shell 60 is located in the tapered hole. An internal threaded ring 62 is coaxially provided at the upper end of the connecting tube 61, and an external connecting tube 63 is provided in the internal threaded ring 62, and an inner suction head 64 is provided at the inner side end of the external connecting tube 63, and the inner suction head 64 is a funnel-shaped structure, and a plurality of suction eyes 65 are provided on the tapered wall of the inner suction head 64.

[0022] When performing the suction operation in this embodiment, the operator places the test tube in the conical groove of the ferromagnetic column 2. At this time, the magnetic beads at the bottom will be adsorbed by the ferromagnetic column 2, and then the operator moves the movable plate 32 downward, and makes the semicircular magnetic ring 36 above the liquid surface, and then pushes the movable plate 32 inward to make the two semicircular magnetic rings 36 dock to form a ring, and then moves the semicircular magnetic ring 36 downward, and the rod 41 passes through the vertical groove 30 during the movement, and the movement of the semicircular magnetic ring 36 makes the magnetic beads therein move downward to the bottom of the test tube, and are adsorbed by the ferromagnetic column 2.

[0023] Then the operator inserts the pipette 6 into the extract and its lower end into the magnetic bead group, while the rubber plug 5 seals the upper end of the test tube, and then rotates the connecting outer tube 63 to move the inner suction head 64 upward, thereby connecting the suction eye 65 with the internal space of the test tube, and then connects the suction tube of the pipette to the connecting outer tube 63, and sucks the extract. During suction, the extract is drawn out of the test tube, and the magnetic beads are stably adsorbed at the bottom of the test tube by the ferromagnetic column 2.

[0024] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. A test tube placement and transfer magnetic rack, It is characterized in that The invention comprises a bottom plate (1), a ferromagnetic column (2) is mounted on the bottom plate (1), a conical groove is formed at the upper end of the ferromagnetic column (2), the upper end of the conical groove is a large end, and a test tube is placed on the ferromagnetic column (2); The bottom plate (1) is provided with convex parts (10) on both sides, and the convex parts (10) are provided with support rods (3) extending upward, and a movable plate (32) is sleeved on the support rod (3), and a waist-shaped hole (33) is opened on the movable plate (32), and the support rod (3) is inserted into the waist-shaped hole (33). An arc plate (35) is provided at the inner side end of the movable plate (32), and a semicircular magnetic ring (36) is installed on the arc plate (35).

2. The test tube placement and liquid transfer magnetic stand according to claim 1, It is characterized in that The outer end of the movable plate (32) is provided with a sleeve (34), a circular groove is provided in the sleeve (34), a spring (39) is provided in the circular groove, a movable rod (37) is inserted in the spring (39), the movable rod (37) is inserted from the outer end of the sleeve (34), an end cap (40) is provided at the inner end of the movable rod (37), the end cap (40) is located at the inner end of the spring (39), an insertion rod (41) is provided at the inner end of the end cap (40), a vertical groove (30) is provided on the support rod (3), and the insertion rod (41) is inserted into the vertical groove (30).

3. The test tube placement and liquid transfer magnetic stand according to claim 2, It is characterized in that A pull cap (38) is provided at the outer end of the movable rod (37).

4. The test tube placement and liquid transfer magnetic stand according to claim 2, It is characterized in that A slot (31) is provided at the upper end of the support rod (3).

5. The test tube placement and liquid transfer magnetic stand according to claim 1, It is characterized in that A rubber plug (5) is provided at the upper end of the test tube, an upper column (50) is provided at the upper end of the rubber plug (5), an upper hole is provided at the upper end of the upper column (50), a conical hole is connected at the lower end of the upper hole, a lower hole is connected at the lower end of the conical hole, a suction tube (6) is passed through the lower hole, a plurality of holes are provided at the lower end of the suction tube (6), a connecting tube (61) is provided in the upper hole, a conical shell (60) is provided at the lower end of the connecting tube (61), the conical shell (60) is located in the conical hole, an internal threaded ring (62) is coaxially provided at the upper end of the connecting tube (61), an external connecting tube (63) is provided in the internal threaded ring (62), an internal suction head (64) is provided at the inner side end of the external connecting tube (63), the internal suction head (64) is in a funnel-shaped structure, and a plurality of suction eyes (65) are provided on the conical wall of the internal suction head (64).

6. The test tube placement and liquid transfer magnetic stand according to claim 5, It is characterized in that The lower end of the straw (6) is a conical structure, and the lower end of the straw (6) is a small end.

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