Automatic split charging device for liquid culture medium

Abstract

The utility model relates to the technical field of culture medium split charging, in particular to an automatic liquid culture medium split charging device which comprises a support, a split charging barrel, an electric rotating disc and a cover plug mechanism. The split charging barrel is detachably installed on the other side wall of the support, the piston plate is driven by a lifting mechanism to be subjected to displacement adjustment in the vertical direction of the inner wall of the split charging barrel, and a liquid inlet pipe is arranged on the side wall of the split charging barrel; a test tube is placed in the placing groove; the plug covering mechanism is installed on the support and located on one side of the lifting mechanism. A plurality of groups of test tubes can be driven to rotate by a proper angle through the electric turntable, and the piston plate can be driven to move upwards or downwards by a proper height along the inner wall of the split charging barrel through the lifting mechanism, so that a proper amount of culture medium in the charging barrel is pumped out and conveyed into the corresponding test tubes; and the test tubes subjected to split charging can be conveniently sealed through the cover plug mechanism, so that the culture media are prevented from being polluted, a detection result is prevented from being interfered, and the split charging efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of culture medium dispensing technology, specifically to an automatic liquid culture medium dispenser. Background Technology

[0002] For the detection of fecal coliforms in fertilizers and thermotolerant coliforms in cosmetics, the national standard allows for the use of the multi-tube fermentation method. The culture medium is not only the basic substance that provides cell nutrition and promotes cell proliferation, but also the living environment for cell growth and reproduction. The liquid culture medium needs to be dispensed during the detection process.

[0003] For most liquid culture media, the culture medium is usually extracted from the container using a syringe and then injected into test tubes. Each test tube is then capped to prevent contamination. While this method can dispense the culture medium into test tubes, it becomes inefficient when dispensing a large number of test tubes, increasing the workload for workers. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing an automatic liquid culture medium dispenser.

[0005] The technical solution of this utility model is as follows: An automatic liquid culture medium dispenser includes a support with a lifting mechanism on one side wall; a dispensing cylinder detachably mounted on the other side wall of the support, with a piston plate slidably connected inside the dispensing cylinder, the piston plate being driven by the lifting mechanism to move vertically along the inner wall of the dispensing cylinder; an inlet pipe on the side wall of the dispensing cylinder and an outlet pipe at the bottom end of the dispensing cylinder, the bottom end of the outlet pipe being connected to a diverter pipe; check valves on both the inlet and outlet pipes; an electric turntable mounted on the support, with multiple sets of placement slots arranged in a circular array on the electric turntable, each placement slot containing a test tube; multiple outlets on the diverter pipe corresponding to the test tubes on the electric turntable; and a capping mechanism mounted on the support and located on one side of the lifting mechanism, used to cap the dispensed test tubes.

[0006] Preferably, the lifting mechanism consists of a motor mounted on a support, a screw connected to the output end of the motor via a transmission, a movable plate threadedly connected to the screw, and an adjusting rod mounted on the other end of the movable plate. The end of the adjusting rod away from the movable plate is connected to a piston plate.

[0007] Preferably, the liquid inlet pipe is connected to the bottom of the inside of the material cylinder via a flexible hose, and a limit clamp is engaged between the flexible hose and the top edge of the material cylinder.

[0008] Preferably, the capping mechanism includes a placement box, which is mounted on a support and located above an electric turntable. Two sets of first abutment plates are symmetrically distributed at the upper end of multiple placement cavities within the placement box. The first abutment plates are connected to the side walls of the placement cavities via elastic elements. Two sets of second abutment plates are symmetrically distributed at the bottom end of multiple placement cavities. The second abutment plates are connected to the side walls of the placement cavities via elastic elements. Test tube plugs are stacked sequentially from top to bottom inside the placement cavities. The left and right sides of the test tube plugs abut against the two sets of first abutment plates or the two sets of second abutment plates, and the front and rear side walls of the test tube plugs abut against the placement cavities. A movable seat is mounted on the top of the support frame via an electric push rod. Multiple sets of pressing rods are evenly installed at the bottom of the movable seat, and the pressing rods correspond to the test tube plugs in the placement cavities.

[0009] Preferably, the test tube stopper consists of a cap and a stopper body. The projected area diameter of the cap is larger than that of the stopper body. The stopper body abuts against the inner wall of the test tube, and the cap body abuts against the top of the test tube.

[0010] Preferably, the first abutment plate is a rectangular plate, the second abutment plate is a J-shaped plate, the length of the elastic element connected to the second abutment plate is greater than the length of the elastic element connected to the first abutment plate, and the second abutment plate corresponds to the plug body of the test tube plug.

[0011] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects: This utility model can drive multiple sets of test tubes to rotate at a suitable angle through an electric turntable, and can drive the piston plate to move up or down at a suitable height along the inner wall of the dispensing cylinder through a lifting mechanism, thereby extracting an appropriate amount of culture medium from the cylinder and conveying it to the corresponding test tubes, thus completing the dispensing of multiple sets of test tube culture medium in a short time and improving dispensing efficiency; the capping mechanism facilitates sealing of the dispensed test tubes, avoiding contamination of the culture medium and avoiding interference with the test results. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the dispensing cylinder structure of this utility model;

[0014] Figure 3 This is a schematic diagram showing the connection between the capping mechanism and the electric turntable of this utility model;

[0015] Figure 4 This is a schematic diagram of the internal structure of the capping mechanism of this utility model.

[0016] Reference numerals: 1. Support; 2. Lifting mechanism; 3. Material cylinder; 301. Limiting clamp; 4. Dispensing cylinder; 401. Piston plate; 402. Inlet pipe; 403. Outlet pipe; 404. Diverter pipe; 5. Electric turntable; 501. Placement trough; 6. Support frame; 601. Placement box; 602. Placement cavity; 603. First abutment plate; 604. Second abutment plate; 605. Test tube stopper; 606. Electric push rod; 607. Moving seat; 608. Pressing rod. Detailed Implementation

[0017] Example 1

[0018] like Figures 1 to 3 As shown, this utility model proposes an automatic liquid culture medium dispenser, including a support 1, a dispensing cylinder 4, an electric turntable 5, and a capping mechanism; a lifting mechanism 2 is provided on one side wall of the support 1; the dispensing cylinder 4 is detachably installed on the other side wall of the support 1, and a piston plate 401 is slidably connected inside the dispensing cylinder 4. The piston plate 401 is driven by the lifting mechanism 2 to move and adjust vertically along the inner wall of the dispensing cylinder 4. An inlet pipe 402 is provided on the side wall of the dispensing cylinder 4, and an outlet pipe 403 is provided at the bottom end of the dispensing cylinder 4. A diverter pipe 404 is connected to the bottom end of the outlet pipe 403. The inlet pipe 402 and the outlet pipe 403 are connected to each other. Each tube 403 is equipped with a check valve, which ensures that the culture medium in the material cylinder 3 can only enter the dispensing cylinder 4 along the tubing and the inlet pipe 402, and that the culture medium in the dispensing cylinder 4 can only be discharged into the diversion pipe 404 along the outlet pipe 403. The electric turntable 5 is mounted on the support 1, and multiple sets of placement slots 501 are arranged in a ring array on the electric turntable 5. Test tubes are placed inside the placement slots 501, and multiple sets of outlets on the diversion pipe 404 correspond to the test tubes on the electric turntable 5. The capping mechanism is mounted on the support 1 and located on one side of the lifting mechanism 2, and is used to cap the dispensing test tubes.

[0019] Furthermore, the lifting mechanism 2 consists of a motor mounted on the support 1, a screw connected to the output end of the motor, a movable plate threadedly connected to the screw, and an adjusting rod mounted on the other end of the movable plate. The end of the adjusting rod away from the movable plate is connected to the piston plate 401. The motor drives the screw to rotate, thereby causing the movable plate to move vertically for adjustment. In turn, the adjusting rod causes the piston plate 401 to move up and down along the inner wall of the dispensing cylinder 4 for adjustment.

[0020] Furthermore, the liquid inlet pipe 402 is connected to the bottom of the inside of the material cylinder 3 via a flexible hose, and a limiting clamp 301 is snapped into the top edge of the material cylinder 3. The limiting clamp 301 helps to limit the hose on the material cylinder 3 and prevent it from falling off.

[0021] In this embodiment, the culture medium-filled cylinder 3 is placed on one side of the top of the support 1, and the bottom end of the hose connected to the inlet pipe 402 is inserted into the bottom of the inside of the cylinder 3. The hose is limited on the cylinder 3 by the limiting clamp 301. Multiple sets of test tubes are placed into the corresponding placement slots 501. At this time, the output end of the diversion pipe 404 corresponds to the top of the multiple sets of test tubes at the corresponding position on the electric turntable 5. The lifting mechanism 2 is activated to drive the piston plate 401 to move up a suitable height along the inner wall of the dispensing cylinder 4. Then, the culture medium in the cylinder 3 enters the dispensing cylinder 4 along the hose and the inlet pipe 402. A suitable amount of culture medium is drawn into the dispensing cylinder 4. The lifting mechanism 2 drives the piston plate 401 to move down to a suitable height, allowing the culture medium in the dispensing cylinder 4 to enter the diversion tube 404 along the outlet tube 403. Then, the culture medium enters the corresponding test tubes from the multiple output ends of the diversion tube 404. After the multiple test tubes below the diversion tube 404 have been dispensed, the electric turntable 5 is started to rotate at a suitable angle, so that the new empty test tubes rotate to the bottom of the diversion tube 404 and continue to be filled with culture medium. When the dispensed test tubes rotate to the bottom of the capping mechanism, the capping mechanism covers the multiple test tubes with test tube stoppers 605 to prevent the culture medium from coming into contact with external interference and being contaminated, thus avoiding affecting the efficiency of subsequent detection.

[0022] Example 2

[0023] like Figure 1 , Figure 3 and Figure 4 As shown, the automatic liquid culture medium dispenser proposed in this utility model, compared with Embodiment 1, includes a capping mechanism comprising a placement box 601 and a movable seat 607. The placement box 601 is mounted on the support 1 and located above the electric turntable 5. The placement box 601 is connected to the support 1 via a support frame 6. Two sets of first abutment plates 603 are symmetrically distributed at the upper end of the multiple placement cavities 602 inside the placement box 601. The first abutment plates 603 are connected to the side walls of the placement cavities 602 via elastic elements. Two sets of second abutment plates are symmetrically distributed at the bottom end of the multiple placement cavities 602. Plate 604 and second abutment plate 604 are connected to the side wall of placement cavity 602 through elastic element. Test tube plugs 605 are stacked from top to bottom inside placement cavity 602. The left and right sides of test tube plugs 605 abut against two sets of first abutment plates 603 or two sets of second abutment plates 604. The front and rear side walls of test tube plugs 605 abut against placement cavity 602. Movable seat 607 is installed on top of support frame 6 through electric push rod 606. Multiple sets of pressing rods 608 are evenly installed at the bottom of movable seat 607. The pressing rods 608 correspond to the test tube plugs 605 in placement cavity 602.

[0024] Furthermore, the test tube stopper 605 consists of a cap and a stopper. The projected area diameter of the cap is larger than that of the stopper. The stopper abuts against the inner wall of the test tube, and the cap abuts against the top of the test tube.

[0025] Furthermore, the first abutment plate 603 is a rectangular plate, and the second abutment plate 604 is a J-shaped plate. The length of the elastic element connected to the second abutment plate 604 is greater than the length of the elastic element connected to the first abutment plate 603. The second abutment plate 604 corresponds to the plug body of the test tube plug 605 to avoid the set of test tube plugs 605 located at the lowest end from tilting and interfering with the capping.

[0026] In this embodiment, multiple sets of test tube stoppers 605 are stacked sequentially in the corresponding placement cavities 602. Due to the action of the elastic element, the two sets of first abutment plates 603 and two sets of second abutment plates 604 clamp the multiple sets of test tube stoppers 605. Under the subsequent pressing of the pressing rod 608, they adaptively self-adjust. When the dispensed test tubes are rotated to the bottom of the placement box 601, the electric push rod 606 is activated to drive the moving seat 607 to move down, which drives the multiple sets of pressing rods 608 to insert into the corresponding placement cavities 602 and press down the test tube stoppers 605 until the set of test tube stoppers 605 at the lowest end of the placement cavity 602 separates from the second abutment plate 604 and connects to the test tube. The electric push rod 606 drives the multiple sets of pressing rods 608 to reset. This process is repeated to complete the capping of the test tubes.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An automatic liquid culture medium dispenser, characterized in that, include Support (1), with a lifting mechanism (2) installed on one side wall of the support; The dispensing cylinder (4) is detachably installed on the other side wall of the support (1). A piston plate (401) is slidably connected inside the dispensing cylinder (4). The piston plate (401) is driven by the lifting mechanism (2) to move and adjust vertically along the inner wall of the dispensing cylinder (4). An inlet pipe (402) is provided on the side wall of the dispensing cylinder (4). An outlet pipe (403) is provided at the bottom of the dispensing cylinder (4). A diverter pipe (404) is connected to the bottom of the outlet pipe (403). Check valves are provided on both the inlet pipe (402) and the outlet pipe (403). An electric turntable (5) is mounted on a support (1). Multiple sets of placement slots (501) are arranged in a ring array on the electric turntable (5). Test tubes are placed inside the placement slots (501). Multiple sets of liquid outlets on the diversion pipe (404) correspond to the test tubes on the electric turntable (5). And a capping mechanism, which is mounted on the support (1) and located on one side of the lifting mechanism (2), for capping the dispensed test tubes.

2. The automatic liquid culture medium dispenser according to claim 1, characterized in that, The lifting mechanism (2) consists of a motor mounted on the support (1), a screw connected to the output end of the motor, a moving plate connected to the screw by a thread, and an adjusting rod mounted on the other end of the moving plate. The end of the adjusting rod away from the moving plate is connected to the piston plate (401).

3. The automatic liquid culture medium dispenser according to claim 1, characterized in that, The liquid inlet pipe (402) is connected to the bottom of the inside of the material cylinder (3) through a hose, and a limit clamp (301) is snapped into the top edge of the material cylinder (3).

4. The automatic liquid culture medium dispenser according to claim 1, characterized in that, The capping mechanism includes The placement box (601) is set on the support (1) and located above the electric turntable (5). The upper part of the multiple placement cavities (602) in the placement box (601) is symmetrically distributed with two sets of first abutment plates (603). The first abutment plates (603) are connected to the side wall of the placement cavity (602) through elastic elements. The lower part of the multiple placement cavities (602) is symmetrically distributed with two sets of second abutment plates (604). The second abutment plates (604) are connected to the side wall of the placement cavity (602) through elastic elements. The placement cavity (602) is stacked with test tube plugs (605) from top to bottom. The left and right sides of the test tube plugs (605) abut against the two sets of first abutment plates (603) or the two sets of second abutment plates (604). The front and rear side walls of the test tube plugs (605) abut against the placement cavity (602). And a movable seat (607), which is installed on the top of the support frame (6) by an electric push rod (606). Multiple sets of pressing rods (608) are evenly installed at the bottom of the movable seat (607), and the pressing rods (608) correspond to the test tube plugs (605) in the placement cavity (602).

5. An automatic liquid culture medium dispenser according to claim 4, characterized in that, The test tube stopper (605) consists of a cap and a stopper. The diameter of the projected area of ​​the cap is larger than the diameter of the projected area of ​​the stopper. The stopper abuts against the inner wall of the test tube, and the cap abuts against the top of the test tube.

6. An automatic liquid culture medium dispenser according to claim 5, characterized in that, The first abutment plate (603) is a rectangular plate, and the second abutment plate (604) is a J-shaped plate. The length of the elastic element connected to the second abutment plate (604) is greater than the length of the elastic element connected to the first abutment plate (603). The second abutment plate (604) corresponds to the plug body of the test tube plug (605).

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