Position-adjustable filling device for biochemical analyzer

Abstract

The utility model discloses a kind of position-adjustable filling device for biochemical analyzer, belong to biochemical analyzer technical field, it includes electromagnetic guide rail, the outer wall of the electromagnetic guide rail is equipped with electromagnetic movable block, and the end of electromagnetic movable block away from electromagnetic guide rail is equipped with mounting plate.The utility model is provided with the actuating mechanism for driving rotating pipe rotation on mounting bracket, driving mechanism for driving incomplete closed disc rotation is provided in round bottom opening bin, so that when sample in sampling needle is extruded and discharged, sample in sampling needle can be fully discharged by driving mechanism driving sampling needle small amplitude adjustment inclination, rotating pipe is driven by actuating mechanism to rotate, centrifugal force is generated under the rotating action of rotating pipe, so as to cooperate, avoid the residue of inner wall to cause sample to be insufficiently added and appear drop pollution equipment in the moving process before cleaning.

Description

Technical Field

[0001] This utility model belongs to the technical field of biochemical analyzers, specifically a position-adjustable dispensing device for a biochemical analyzer. Background Technology

[0002] In the modern pharmaceutical industry, biochemical analyzers are frequently used to analyze specific components in various body fluids and other samples to examine physical conditions. Biochemical analyzers generally consist of multiple parts, such as the sampling and dispensing section, which is a typical example. It can extract samples and dispensing them into reaction solutions for reaction. In application, the sampling and dispensing section is usually adjustable and can move between sample containers, reaction containers, and cleaning sections to complete tasks such as sampling and dispensing.

[0003] When using the position-adjustable dispensing device of the existing biochemical analyzer, the sampling needle is generally fixed vertically on the device. However, in this way, the sample is only discharged by the pump, and residues are easy to remain on the inner wall of the needle, which can easily lead to insufficient sample addition. At the same time, the sample can easily drip onto the equipment and cause contamination during the movement before subsequent cleaning. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a position-adjustable dispensing device for biochemical analyzers, which solves the problem of residue easily appearing on the inner wall when the sample is extruded by the existing position-adjustable dispensing device for biochemical analyzers.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a position-adjustable dispensing device for a biochemical analyzer, comprising an electromagnetic guide rail, an electromagnetic movable block sleeved on the outer wall of the electromagnetic guide rail, and an installation plate installed at the end of the electromagnetic movable block away from the electromagnetic guide rail, and an installation frame installed on the top of the installation plate;

[0006] The top of the mounting plate is through a rotating tube, and a round-bottomed open compartment is installed on the outer side of the rotating tube near the bottom. A rotating shaft is provided at one end of the round-bottomed open compartment, and a partially enclosed disc is installed at the end of the rotating shaft near the electromagnetic rail. A sampling needle is through the top of the partially enclosed disc, and the sampling needle is connected to the rotating tube through a corrugated pipe.

[0007] A worm gear is installed on the outer side of the rotating shaft away from the end of the partially enclosed disk, and a drive mechanism for rotating the partially enclosed disk is provided in the round bottom opening compartment.

[0008] The mounting bracket is equipped with an actuator for driving the rotating tube to rotate.

[0009] As a further embodiment of this utility model: a fixed tube extends through the top of the mounting bracket near the rotating tube, and a sealed rotating connector is connected between the sealed rotating connector and the rotating tube.

[0010] As a further embodiment of this utility model: the driving mechanism includes a first servo motor, which is installed on one side inside the round-bottomed open compartment. The output end of the first servo motor is connected to a mounting shaft, and a worm gear is installed on the outside of the mounting shaft.

[0011] As a further embodiment of this invention: the central axis of the worm is perpendicular to the central axis of the worm wheel, and the worm and the worm wheel are meshed together.

[0012] As a further embodiment of this utility model: the actuator includes a second servo motor, which is installed on the bottom of the fixed tube away from the rotating tube. The output end of the second servo motor is connected to an output shaft, which passes through the mounting plate. A pulley assembly is connected between the output shaft and the rotating tube.

[0013] As a further embodiment of this utility model: a fixing plate is installed on the bottom of the mounting plate away from the rotating tube, and a protective groove is opened on the bottom of the fixing plate near the rotating tube, and a fitting protective component is installed inside the protective groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. The mounting frame is equipped with an actuator to drive the rotating tube, and the round-bottomed open chamber is equipped with a drive mechanism to drive the partially enclosed disc to rotate. When the sample is squeezed out of the sampling needle, the drive mechanism can drive the sampling needle to adjust its tilt angle slightly, and the actuator drives the rotating tube to rotate. The rotation of the rotating tube generates centrifugal force, which can help to fully discharge the sample in the sampling needle. This avoids the possibility of residue on the inner wall causing insufficient sample addition and dripping during the movement before cleaning, which could contaminate the equipment. At the same time, the sampling needle can discharge the sample into the reactor dish more evenly, reducing the amount of subsequent mixing work.

[0016] 2. A fixing plate is installed on the mounting plate, and a protective groove on the fixing plate is equipped with a fitting protective component. When the device is not in use for a long time or during maintenance, the needle tip of the sampling needle can be driven by the drive mechanism into the protective groove. The cut part of the needle tip is fully fitted with the fitting protective component, which can protect the needle tip during long-term non-use or maintenance, prevent the external environment from easily contaminating the inside of the sampling needle, and increase the safety during maintenance. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the front sectional view of this utility model;

[0019] Figure 3 This is a utility model Figure 1 A magnified structural diagram at point A;

[0020] Figure 4 This is a schematic diagram of the front sectional view of the round-bottomed open compartment of this utility model;

[0021] Figure 5 This is a utility model Figure 4 A magnified structural diagram at point B;

[0022] Figure 6 This is a side sectional view of the present invention.

[0023] Figure 7 This is a utility model Figure 6 A magnified structural diagram at point C;

[0024] Figure 8 This is a schematic diagram of the main structure of the incompletely enclosed disc of this utility model.

[0025] In the diagram: 1. Electromagnetic guide rail; 2. Electromagnetic movable block; 3. Mounting plate; 4. Rotating tube; 5. Round-bottomed open compartment; 6. Rotating shaft; 7. Partially enclosed disc; 8. Sampling needle; 9. Bellows; 10. Mounting bracket; 11. Fixed tube; 12. Sealed rotating connector; 13. Worm gear; 14. First servo motor; 15. Mounting shaft; 16. Worm; 17. Second servo motor; 18. Output shaft; 19. Pulley assembly; 20. Fixed plate; 21. Protective groove; 22. Fitting protective component. Detailed Implementation

[0026] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0027] Example 1

[0028] like Figures 1-8 As shown, this utility model provides a technical solution:

[0029] An adjustable dispensing device for a biochemical analyzer includes an electromagnetic rail 1, an electromagnetic movable block 2 sleeved on the outer wall of the electromagnetic rail 1, and an installation plate 3 installed at the end of the electromagnetic movable block 2 away from the electromagnetic rail 1. An installation bracket 10 is installed on the top of the installation plate 3. The electromagnetic movable block 2 is slidably connected to the electromagnetic rail 1 and has the ability to move autonomously, thereby driving the sampling part on the rail to move up and down to complete the sampling and sample discharge tasks.

[0030] A rotating tube 4 passes through the top of the mounting plate 3, and a round-bottomed open chamber 5 is installed on the outer side of the rotating tube 4 near the bottom. A rotating shaft 6 is installed at one end of the round-bottomed open chamber 5. A partially enclosed disc 7 is installed at the end of the rotating shaft 6 near the electromagnetic rail 1. A sampling needle 8 passes through the top of the partially enclosed disc 7, and the sampling needle 8 is connected to the rotating tube 4 through a corrugated pipe 9. The rotating tube 4 is rotatably connected to the mounting plate 3, and the rotating shaft 6 is rotatably connected to the round-bottomed open chamber 5. Under the action of a corresponding external force, the tilt angle of the partially enclosed disc 7 can be adjusted. The rotation of the rotating tube 4 at this time can bring centrifugal force to the sampling needle 8, so that the sample in the sampling needle 8 can be discharged more fully, avoiding the easy residue on the inner wall. At the same time, the sample can be discharged more evenly into the reactor vessel. The center of the partially enclosed disc 7 coincides with the center of the bottom part of the round-bottomed open chamber 5, so that the round-bottomed open chamber 5 can always be closed while the partially enclosed disc 7 is rotating, thus protecting the inside part.

[0031] A fixed pipe 11 runs through the top of the mounting bracket 10 near the rotating pipe 4, and a sealed rotating connector 12 is connected to the rotating pipe 4. The sealed rotating connector 12 is rotatably connected to the fixed pipe 11 and the rotating pipe 4 respectively, so that the sealed rotating connector 12 will not obstruct the rotation of the rotating pipe 4. In use, the sealed rotating connector 12 is connected to the extraction, discharge and cleaning pump.

[0032] A worm gear 13 is installed on the outer side of the rotating shaft 6 away from the partially enclosed disk 7. A drive mechanism for rotating the partially enclosed disk 7 is provided inside the round-bottomed open chamber 5. The drive mechanism includes a first servo motor 14, which is installed on one side inside the round-bottomed open chamber 5. The output end of the first servo motor 14 is connected to a mounting shaft 15, and a worm gear 16 is installed on the outer side of the mounting shaft 15. The central axis of the worm gear 16 is perpendicular to the central axis of the worm gear 13, and the worm gear 16 and the worm gear 13 are meshed. The mounting shaft 15 and the round-bottomed open chamber 5 are rotatably connected. When the first servo motor 14 drives the mounting shaft 15 and the worm gear 16 to rotate, the rotating shaft 6 can drive the partially enclosed disk 7 to rotate accordingly, thereby adjusting the tilt angle of the sampling needle 8. At the same time, the worm gear 13 cannot drive the worm gear 16 to rotate, thereby ensuring the stability of the partially enclosed disk 7 and the sampling needle 8 when the mounting shaft 15 is not rotating. Furthermore, the first servo motor 14 can be powered by brushes.

[0033] The mounting bracket 10 is equipped with an actuator for driving the rotating tube 4 to rotate. The actuator includes a second servo motor 17, which is installed on the bottom of the fixed tube 11 away from the rotating tube 4. The output end of the second servo motor 17 is connected to an output shaft 18, which passes through the mounting plate 3. A pulley assembly 19 is connected between the output shaft 18 and the rotating tube 4. The output shaft 18 and the mounting plate 3 are rotatably connected, so that the second servo motor 17 can drive the output shaft 18 to rotate. When the output shaft 18 rotates, the rotating tube 4 can complete the rotation task. Furthermore, the pulley assembly 19 can be a toothed type to ensure the accuracy of the rotation amplitude.

[0034] Example 2

[0035] Based on the above embodiment 1, as Figures 1-8 As shown, a fixing plate 20 is installed on the bottom side of the mounting plate 3 away from the rotating tube 4. A protective groove 21 is opened on the bottom side of the fixing plate 20 near the rotating tube 4, and a fitting protective part 22 is installed inside the protective groove 21. This allows the sampling needle 8 to be inserted into the protective groove 21 by adjusting the angle of the sampling needle 8 during long-term non-use or maintenance. The cut part of the sampling needle 8 is fitted with the beveled part of the fitting protective part 22, thereby achieving the protection task.

[0036] It should be noted that during each sample discharge operation, the second servo motor 17 will drive the rotating tube 4 to rotate a specified number of times. After each discharge operation is completed, the round bottom opening chamber 5 and the sampling needle 8 will return to their initial amplitude. The second servo motor 17 and the first servo motor 14 are controlled by a microcontroller to open and close and rotate.

[0037] The working principle of this utility model is as follows: The device is powered by an external power source. The electromagnetic rail 1 is installed on the drive part that moves the sampling part between the sample vessel, the reactor vessel and the cleaning mechanism. The drive part moves the electromagnetic rail 1 and the sampling and dispensing part on it to different positions.

[0038] In the sampling and dispensing task, the microcontroller controller drives the sampling needle 8 to move above the sample vessel. The electromagnetic moving block 2 controls the sampling needle 8 to move downward and insert into the sample vessel at a specified depth, which can be preset. Then, the extraction pump connected to the fixed tube 11 applies extraction force to sample. The sampling needle 8 rises to the initial height, and the electromagnetic guide rail 1 drives the sampling needle 8 to move above the reactor vessel. The electromagnetic moving block 2 drives the sampling needle 8 to begin descending into the reactor vessel. During this process, the first servo motor 14 drives the mounting shaft 15 and the worm gear 16 to rotate by a specified amplitude, so that the partially enclosed disk 7 drives the sampling needle 8 to adjust the tilt angle slightly, and the sampling needle 8 will not collide with the inner wall of the reactor vessel. Then, the discharge pump connected to the fixed tube 11 applies discharge force to the sampling needle 8, and the sample begins to be discharged. During this process, the second servo motor 17 drives the output shaft 18 to rotate, so that the rotating tube 4 rotates accordingly, making the sample discharge from the sampling needle 8 more uniform. At the same time, there is centrifugal force inside the sampling needle 8, which can make the sample discharge more complete.

[0039] After the sample is discharged, the electromagnetic moving block 2 drives the sampling needle 8 to move upward to restore the initial height. At the same time, the first servo motor 14 drives the mounting shaft 15 to rotate in the opposite direction, so that the sampling needle 8 returns to the vertical state.

[0040] When the analyzer is not used for a long time or is being inspected and maintained, the sampling needle 8 can be actively controlled by the controller to rotate and insert into the protective groove 21. The cut part of the sampling needle 8 is fully fitted with the beveled part of the protective component 22 to achieve the protection task. The protective component 22 can be made of rubber to avoid unnecessary wear on the sampling needle 8.

[0041] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A position-adjustable dispensing device for a biochemical analyzer, comprising an electromagnetic guide rail (1), characterized in that: The outer wall of the electromagnetic rail (1) is fitted with an electromagnetic movable block (2), and an installation plate (3) is installed at the end of the electromagnetic movable block (2) away from the electromagnetic rail (1). An installation bracket (10) is installed on the top of the installation plate (3). The top of the mounting plate (3) is through a rotating tube (4), and a round-bottomed open compartment (5) is installed on the outer side of the rotating tube (4) near the bottom. A rotating shaft (6) is provided at one end of the round-bottomed open compartment (5). A partially enclosed disc (7) is installed at one end of the rotating shaft (6) near the electromagnetic rail (1). A sampling needle (8) is through the top of the partially enclosed disc (7), and the sampling needle (8) is connected to the rotating tube (4) through a corrugated pipe (9). A worm gear (13) is installed on the outer side of the shaft (6) away from the partially enclosed disk (7), and a drive mechanism for driving the partially enclosed disk (7) to rotate is provided in the round bottom opening chamber (5). The mounting bracket (10) is provided with an actuator for driving the rotating tube (4) to rotate.

2. The position-adjustable dispensing device for a biochemical analyzer according to claim 1, characterized in that, The mounting bracket (10) has a fixed tube (11) running through the top of the rotating tube (4), and a sealed rotating connector (12) is connected to the rotating tube (4).

3. The position-adjustable dispensing device for a biochemical analyzer according to claim 1, characterized in that, The drive mechanism includes a first servo motor (14), which is installed on one side inside the round-bottomed open compartment (5). The output end of the first servo motor (14) is connected to a mounting shaft (15), and a worm gear (16) is installed on the outside of the mounting shaft (15).

4. The position-adjustable dispensing device for a biochemical analyzer according to claim 3, characterized in that, The central axis of the worm (16) is perpendicular to the central axis of the worm wheel (13), and the worm (16) and the worm wheel (13) are meshed together.

5. The position-adjustable dispensing device for a biochemical analyzer according to claim 1, characterized in that, The actuator includes a second servo motor (17), which is mounted on the bottom of the fixed tube (11) away from the rotating tube (4). The output end of the second servo motor (17) is connected to an output shaft (18), and the output shaft (18) passes through the mounting plate (3). A pulley assembly (19) is connected between the output shaft (18) and the rotating tube (4).

6. The position-adjustable dispensing device for a biochemical analyzer according to claim 1, characterized in that, A fixing plate (20) is installed on the bottom of the mounting plate (3) away from the rotating tube (4). A protective groove (21) is provided on the bottom of the fixing plate (20) near the rotating tube (4), and a fitting protective component (22) is installed inside the protective groove (21).

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