Automatic liquid collecting device for chromatographic column

Abstract

The utility model discloses an automatic liquid collecting device for a chromatographic column, which relates to the technical field of liquid collection and comprises a support frame, a box body, a disc and a lifting frame, the chromatographic column is suspended on the support frame, and a liquid outlet is arranged at the bottom of the chromatographic column. The box body is arranged below the chromatographic column, a first power mechanism and a second power mechanism are arranged on the box body, a control rod is connected to the top of the first power mechanism and used for rotating the control rod, and the second power mechanism is connected with the lifting frame and used for adjusting the height of the lifting frame; the disc is arranged on the lifting frame, the center of the disc is in vertical sliding fit with the control rod, a plurality of grooves are evenly formed in the top of the disc, the conical flasks are placed in the grooves, and when the disc rotates along with the control rod, one conical flask is moved to the position below the liquid outlet. According to the utility model, liquid released by the chromatographic column can be collected, the conical flask can be automatically replaced, and workers do not need to frequently bend down or squat down.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid collection, in particular to an automatic liquid collecting device for a chromatography column. Background Art

[0002] Chromatographic columns separate compounds based on their different affinities between the stationary phase (usually filler) and the mobile phase (usually solvent). Chromatographic columns can be used to purify compounds, separate components in a mixture, and analyze the content of compounds.

[0003] In the prior art, such as Figure 1 As shown, the chromatography column 12 is suspended on the support frame 11, and a liquid outlet is provided at the bottom of the chromatography column 12. The staff will place a conical bottle under the liquid outlet to collect the liquid released from the liquid outlet. The problems are: ① When the conical bottle under the liquid outlet is full of liquid, it needs to be replaced manually with a new conical bottle; ② The conical bottle is placed on the ground, and when manually replacing the conical bottle, it is necessary to bend or squat frequently, which is inconvenient to operate. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the utility model provides an automatic liquid collecting device for a chromatography column, which can automatically replace a conical flask.

[0005] In order to achieve the purpose of this utility model, the following scheme is proposed:

[0006] The invention discloses an automatic liquid collecting device for a chromatography column, comprising a supporting frame, on which a chromatography column is suspended, a liquid outlet is arranged at the bottom of the chromatography column, and the device also comprises a box body, a disc and a lifting frame.

[0007] The box is arranged below the chromatography column, and a first power mechanism and a second power mechanism are arranged on the box. A control rod is connected to the top of the first power mechanism for rotating the control rod, and the second power mechanism is connected to the lifting frame for adjusting the height of the lifting frame.

[0008] The disc is arranged on the lifting frame, and the center of the disc slides up and down to cooperate with the control rod. A plurality of grooves are evenly arranged on the top of the disc, and the grooves are used to place conical bottles. When the disc rotates with the control rod, one of the conical bottles is moved to below the liquid outlet.

[0009] Furthermore, the lifting frame includes a horizontal plate and two extension plates, the same end of the two extension plates is connected to the horizontal plate, the top of the inner side of the extension plate is provided with an arc groove, the disc is located between the two extension plates, and the disc matches the two arc grooves.

[0010] Furthermore, the control rod comprises a central rod and two convex plates arranged on the side walls thereof, and a through groove is arranged at the center of the disc.

[0011] Furthermore, a cap is provided on the top of the control rod, a screw is provided on the bottom of the cap, and the screw is threadedly connected to the control rod. In a downward projection, the cap completely covers the control rod.

[0012] Furthermore, four wheels are provided at the bottom of the box, and the support frame includes a bottom frame and a frame erected above the bottom frame. The side of the bottom frame facing the box is concave to form two docking grooves, and the docking grooves are used for docking the wheels.

[0013] Furthermore, the first power mechanism includes a first motor, which is arranged in a box body, and an output shaft at the top of the first motor passes through the box body and is connected to a control rod.

[0014] Furthermore, the second power mechanism includes a second motor, a screw and two guide rods. The second motor is arranged in the box body, and the output shaft at the top of the second motor passes through the box body and is connected to the screw rod. The bottom of the two guide rods is arranged in the box body, and the top is connected to the horizontal plate. The top of the screw rod is rotatably connected to the horizontal plate, and the lifting frame is threadedly engaged with the screw rod and slidably engaged with the two guide rods.

[0015] The beneficial effect of the utility model is that: multiple conical bottles can be placed on the disc in advance, and when collecting liquid, the second power mechanism is used to raise the lifting frame and the disc thereon until the liquid outlet is inserted into the corresponding conical bottle, and when the conical bottle is filled with liquid, the second power mechanism is used to lower the lifting frame and the disc thereon to the original position, and the first power mechanism is used to drive the control rod to rotate the disc to a certain angle, so that the next empty conical bottle is moved below the liquid outlet. The utility model can collect the liquid released by the chromatography column and automatically replace the conical bottle without the need for the staff to frequently bend or squat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The structure diagram of the chromatography column installation in the prior art is shown;

[0017] Figure 2 A structural diagram of the support frame is shown;

[0018] Figure 3 The structure diagram of the automatic liquid collection device is shown;

[0019] Figure 4 A rear view of the automatic liquid collection device is shown;

[0020] Figure 5 A top view of the lifting frame is shown;

[0021] Figure 6 A plan view of the disk is shown. DETAILED DESCRIPTION

[0022] like Figure 3 As shown, this embodiment provides an automatic liquid collection device for a chromatography column, comprising a support frame 11, a box body 2, a disc 3, and a lifting frame 4.

[0023] Specifically, a chromatography column 12 is suspended on the support frame 11, and a liquid outlet is provided at the bottom of the chromatography column 12. The box 2 is arranged below the chromatography column 12. A first power mechanism and a second power mechanism are provided on the box 2. A control rod 21 is connected to the top of the first power mechanism, and the first power mechanism is used to rotate the control rod 21. The horizontal cross-section of the control rod 21 is not circular. The second power mechanism is connected to the lifting frame 4, and the second power mechanism is used to adjust the height of the lifting frame 4.

[0024] There are many ways to implement the first power mechanism and the second power mechanism. In this embodiment, the first power mechanism is set as a first motor, the first motor is arranged in the box body 2, and the output shaft at the top of the first motor passes through the box body 2 and is connected to the control rod 21. In this embodiment, the second power mechanism includes a second motor, a screw 221 and two guide rods 222. The second motor is arranged in the box body 2, the output shaft at the top of the second motor passes through the box body 2 and is connected to the screw 221, the bottom of the two guide rods 222 is arranged in the box body 2, the top of the two guide rods 222 is connected to the horizontal plate 223, the top of the screw rod 221 is rotatably connected to the horizontal plate 223, the lifting frame 4 is threadedly matched with the screw 221, and is slidably matched with the two guide rods 222.

[0025] There are many options for the shape of the control rod 21. In this embodiment, Figure 3 , Figure 4 As shown, the control rod 21 includes a central rod 211 and two protruding plates 212 , and the two protruding plates 212 are symmetrically arranged on the side wall of the central rod 211 .

[0026] Specifically, Figure 3 , Figure 6 As shown, the disc 3 is arranged on the lifting frame 4, and a through groove 32 is arranged at the center of the disc 3. The control rod 21 is arranged in the through groove 32. The center of the disc 3 slides up and down to cooperate with the control rod 21. Six grooves 31 are evenly arranged on the top of the disc 3. The grooves 31 are used to place conical bottles. When the disc 3 rotates with the control rod 21, it is used to move one of the conical bottles to below the liquid outlet.

[0027] The method of use is as follows: the staff places six conical flasks in the corresponding grooves 31 in advance; the second motor drives the screw rod 221 to lift the lifting frame 4 and the disc 3 thereon upward until the liquid outlet is inserted into the corresponding conical flask; the chromatography column 12 starts to run, and the corresponding conical flask collects the liquid released from the liquid outlet. When the conical flask is filled with liquid, the second motor drives the screw rod 221 in the reverse direction to lower the lifting frame 4 and the disc 3 thereon to their original positions; the first motor drives the control rod 21 to rotate the disc 3 60°, so that the next empty conical flask moves to the bottom of the liquid outlet.

[0028] The above-mentioned liquid collection process can also be carried out in another way: the second motor drives the screw rod 221 to raise the lifting frame 4 and the disc 3 thereon upward until the liquid outlet is inserted into the corresponding conical flask. Note that the liquid outlet is located at 1 / 3~1 / 2 of the height of the conical flask at this time; the chromatography column 12 starts to run, and the corresponding conical flask collects the liquid released from the liquid outlet, and the liquid level in the conical flask gradually rises. During this process, the second motor drives the screw rod 221 in the reverse direction to gradually lower the lifting frame 4 and the disc 3 thereon. This method is conducive to the conical flask collecting liquid without splashing the liquid.

[0029] More specifically, in order to facilitate installation or removal of the disc 3, the present embodiment adopts the following measures: Figure 3 , Figure 5 As shown, the lifting frame 4 includes a horizontal plate 41 and two extension plates 42. The same end of the two extension plates 42 is connected to the horizontal plate 41. The top of the inner side of the extension plate 42 is provided with an arc groove 421. The disk 3 is located between the two extension plates 42. The disk 3 is placed in the two arc grooves 421, and the size of the disk 3 matches the size of the arc groove 421. Figure 4 As shown, there is a gap between the bottom surface of the disc 3 and the top surface of the box body 2, and the gap allows a worker to lift the disc 3 upward by hand, thereby separating the disc 3 from the control rod 21.

[0030] More specifically, a cap 213 is provided on the top of the control rod 21, and a screw is provided at the bottom of the cap 213. The screw is threadedly connected to the control rod 21. In the downward projection, the cap 213 completely covers the control rod 21. The function of the cap 213 is to prevent the disc 3 from over-lifting under the control of the lifting frame 4.

[0031] More specifically, in order to facilitate the movement of the housing 2 and to facilitate the rapid movement of the housing 2 to a specific position below the chromatography column 12, the present embodiment adopts the following measures: Figure 2 , Figure 3 As shown, four wheels are provided at the bottom of the box body 2, and each wheel has a locking piece to lock the wheel. The support frame 11 includes a bottom frame 111 and a frame 112. The frame 112 is mounted above the bottom frame 111. The bottom frame 111 is concave on one side of the box body 2 to form two docking grooves 113, and the docking grooves 113 are used for docking the wheels.

[0032] When in use, the staff can move the box 2 to the place where the conical flasks are stored, and place the six conical flasks in the corresponding grooves 31 in advance; then move the box 2 to the support frame 11, align the two wheels with the docking grooves 113 respectively, and then push it in until the box 2 can no longer be pushed, then stop and lock the wheels; when the six conical flasks are filled with liquid, the staff can directly pull out the box 2 and move the box 2 to the next liquid experimental site.

[0033] The above embodiments are only used to illustrate the technical ideas and features of the utility model, and are not intended to be the only or limit the utility model. Those skilled in the art should understand that various changes or equivalent replacements made to the utility model without departing from the scope of the utility model are within the scope of protection of the utility model.

Claims

1. A chromatography column automatic liquid collection device, comprising a support frame (11), a chromatography column (12) suspended on the support frame (11), and a liquid outlet at the bottom of the chromatography column (12), characterized in that: The device also includes a box body (2), a disc (3), and a lifting frame (4); The box body (2) is arranged below the chromatography column (12), and a first power mechanism and a second power mechanism are arranged on the box body (2). A control rod (21) is connected to the top of the first power mechanism for rotating the control rod (21), and the second power mechanism is connected to the lifting frame (4) for adjusting the height of the lifting frame (4); The disc (3) is arranged on the lifting frame (4), and the center of the disc (3) slides up and down to cooperate with the control rod (21). A plurality of grooves (31) are evenly arranged on the top of the disc (3), and the grooves (31) are used to place conical bottles. When the disc (3) rotates with the control rod (21), one of the conical bottles is moved to below the liquid outlet.

2. The automatic liquid collection device for a chromatography column according to claim 1, characterized in that: The lifting frame (4) comprises a transverse plate (41) and two extension plates (42). The two extension plates (42) are connected to the transverse plate (41) at the same end. An arc-shaped groove (421) is provided at the top of the inner side of the extension plate (42). The disc (3) is located between the two extension plates (42), and the disc (3) matches the two arc-shaped grooves (421).

3. The automatic liquid collection device for a chromatography column according to claim 1, characterized in that: The control rod (21) comprises a central rod (211) and two convex plates (212) arranged on the side wall thereof, and a through groove (32) is arranged at the center of the disk (3).

4. The automatic liquid collection device for a chromatography column according to claim 1, characterized in that: A cover cap (213) is provided at the top of the control rod (21), and a screw rod is provided at the bottom of the cover cap (213). The screw rod is threadedly connected to the control rod (21). In a downward projection, the cover cap (213) completely covers the control rod (21).

5. The automatic liquid collection device for a chromatography column according to claim 1, characterized in that: Four wheels are arranged at the bottom of the box body (2); the support frame (11) comprises a bottom frame (111) and a frame (112) arranged above the bottom frame (111); one side of the bottom frame (111) facing the box body (2) is concave to form two docking grooves (113); the docking grooves (113) are used for docking the wheels.

6. The automatic liquid collection device for a chromatography column according to claim 1, characterized in that: The first power mechanism comprises a first motor, which is arranged in the box body (2), and an output shaft at the top of the first motor passes through the box body (2) and is connected to a control rod (21).

7. The automatic liquid collection device for a chromatography column according to claim 1, characterized in that: The second power mechanism comprises a second motor, a screw rod (221) and two guide rods (222). The second motor is arranged in the box body (2). The output shaft at the top of the second motor passes through the box body (2) and is connected to the screw rod (221). The two guide rods (222) are arranged at the bottom of the box body (2) and are connected to the horizontal plate (223) at the top. The top of the screw rod (221) is rotatably connected to the horizontal plate (223). The lifting frame (4) is threadedly engaged with the screw rod (221) and slidably engaged with the two guide rods (222).

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