A speed-adjustable stirring device for a biochemical analyzer

Abstract

The utility model discloses a kind of rotational speed adjustable stirring device for biochemical analyzer, belong to biochemical analyzer technical field, it includes first mounting plate, one end of the first mounting plate is provided with sliding slot, and the inside of sliding slot is provided with electromagnetic slide block;Electromagnetic slide block is penetrated with U-shaped movable plate in two sides, and spring is connected between U-shaped movable plate and electromagnetic slide block. The utility model is connected between stirring needle and rotating shaft by U-shaped movable plate and electromagnetic slide block for sliding connection, and second pulley assembly, eccentric wheel is provided on rotating shaft, so that when driving mechanism drives stirring needle to rotate and stir, eccentric wheel can rotate along with it, eccentric wheel brings eccentric force to second mounting plate by centrifugal force, so that in the process of stirring, stirring needle can form vibration constantly along with it, and then can avoid forming stable vortex in sample to affect final mixing effect.

Description

Technical Field

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

[0002] A biochemical analyzer, also known as a biochemical analyzer, is an instrument that uses photoelectric colorimetry to measure specific chemical components in body fluids. It is widely used in modern medicine and other industries. During operation, a biochemical analyzer generally requires multiple steps, such as sampling, mixing, and reaction. Currently, many biochemical analyzers are automated to ensure work efficiency and accuracy. At the same time, the mixing and stirring part can be controlled by a controller to adjust the speed of the motor, thereby performing better mixing tasks for different samples.

[0003] Existing biochemical analyzers use adjustable stirring devices with various stirring methods, such as magnetic stirring and mechanical stirring. Currently, mechanical stirring is still the most commonly used. It can apply more mixing force than other stirring and mixing methods, especially for some viscous samples. However, in actual applications, it often only achieves the mixing task by rotating the stirring part, which can easily cause stable vortices to form in the sample, resulting in insufficient final mixing effect. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a speed-adjustable stirring device for biochemical analyzers, which solves the problem that existing speed-adjustable stirring devices for biochemical analyzers are prone to forming stable vortices during the stirring and mixing process, affecting the final mixing effect.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a speed-adjustable stirring device for a biochemical analyzer, comprising a first mounting plate, one end of which is provided with a groove, and an electromagnetic slider is provided inside the groove;

[0006] The electromagnetic slider has U-shaped movable plates running through both sides, and springs connect the U-shaped movable plates to the electromagnetic slider. A second mounting plate is installed at the end of the U-shaped movable plate away from the first mounting plate. A mounting chamber is installed at the end of the second mounting plate away from the electromagnetic slider. A stirring needle runs through one side of the bottom of the mounting chamber. A drive mechanism for rotating the stirring needle is provided on the mounting chamber.

[0007] The stirring needle is equipped with a first conical tooth on its outer side, a support is installed at the bottom of the mounting chamber, and a rotating shaft passes through both ends inside the support. An eccentric wheel is installed at the end of the rotating shaft near the first mounting plate, and a transmission mechanism for driving the rotating shaft to rotate is provided on the mounting chamber.

[0008] The first mounting plate has a mounting groove at one end near the electromagnetic slider, and the U-shaped movable plate has an extrusion member installed at one end near the mounting groove, with the extrusion member extending into the interior of the mounting groove.

[0009] As a further embodiment of this utility model: both sides of the first mounting plate are equipped with assembly plates, and the top and bottom of one end of the assembly plate are provided with assembly holes.

[0010] As a further embodiment of this utility model: the driving mechanism includes a third mounting plate, which is mounted on the top of the mounting chamber. A motor is mounted on the bottom side of the third mounting plate away from the stirring needle. The output end of the motor is connected to an output shaft, which passes through the mounting chamber. A first pulley assembly is connected between the output shaft and the stirring needle.

[0011] As a further embodiment of this utility model: the transmission mechanism includes a transmission shaft, which passes through the interior of the mounting chamber at one end near the first mounting plate. A second bevel gear is installed at the end of the transmission shaft near the mounting chamber, and a second pulley assembly is connected between the transmission shaft and the rotating shaft.

[0012] As a further embodiment of this utility model: the second bevel tooth is perpendicular to the first bevel tooth, and the second bevel tooth and the first bevel tooth are meshed together.

[0013] As a further embodiment of this utility model: a fixing plate is installed on one side of the mounting groove, and arc-shaped protrusions are evenly installed on the side of the fixing plate near the extruder.

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

[0015] 1. A U-shaped movable plate is slidably connected to the electromagnetic slider, and a second pulley assembly is connected between the stirring needle and the rotating shaft. An eccentric wheel is set on the rotating shaft, so that when the driving mechanism drives the stirring needle to rotate and stir, the eccentric wheel can rotate accordingly. The eccentric wheel brings a eccentric vibration force to the second mounting plate through centrifugal force, so that the stirring needle can continuously vibrate during the stirring process, thereby avoiding the formation of stable vortices in the sample that would affect the final mixing effect.

[0016] 2. The U-shaped movable plate and the electromagnetic slider are slidably connected. The U-shaped movable plate is equipped with a pressing component, and the fixed plate is equipped with multiple sets of arc-shaped protrusions. When the electromagnetic slider moves the stirring needle upward to reset after stirring is completed, the pressing component can cooperate with the multiple sets of arc-shaped protrusions, so that the second mounting plate can also vibrate during the rising process. This can shake the sample attached to the stirring needle into the sample container below, avoiding the slow dripping of sample from the stirring needle before cleaning, which would cause contamination to the equipment. Attached Figure Description

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

[0018] Figure 2 This is a side sectional view of the present invention.

[0019] Figure 3 This is a utility model Figure 2 A magnified structural diagram at point A;

[0020] Figure 4 This is a utility model Figure 2 A magnified structural diagram at point B;

[0021] Figure 5 This is a top sectional view of the structure of this utility model;

[0022] Figure 6 This is a utility model Figure 5 A magnified structural diagram at point C;

[0023] Figure 7 This is a schematic diagram of the main structure of the U-shaped movable plate of this utility model.

[0024] In the diagram: 1. First mounting plate; 2. Assembly plate; 3. Assembly hole; 4. Slide groove; 5. Electromagnetic slider; 6. U-shaped movable plate; 7. Spring; 8. Second mounting plate; 9. Mounting chamber; 10. Stirring needle; 11. Third mounting plate; 12. Motor; 13. Output shaft; 14. First pulley assembly; 15. First bevel gear; 16. Support component; 17. Rotating shaft; 18. Eccentric wheel; 19. Transmission shaft; 20. Second bevel gear; 21. Second pulley assembly; 22. Mounting groove; 23. Extrusion component; 24. Fixing plate; 25. Arc-shaped protrusion. Detailed Implementation

[0025] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0026] Example 1

[0027] like Figures 1-7 As shown, this utility model provides a technical solution:

[0028] An adjustable stirring device for a biochemical analyzer includes a first mounting plate 1, with mounting plates 2 installed on both sides of the first mounting plate 1. Mounting holes 3 are provided at the top and bottom of one end of the mounting plates 2. In use, the device is installed on the stirring system drive of the biochemical analyzer by means of screws and nuts cooperating with the mounting holes 3. The stirring system drive of the biochemical analyzer drives the stirring device to make corresponding movements, thereby completing tasks such as sample stirring or cleaning.

[0029] A groove 4 is provided at one end of the first mounting plate 1, and an electromagnetic slider 5 is provided inside the groove 4. The electromagnetic slider 5 is slidably connected to the groove 4. During use, the electromagnetic slider 5 can drive the stirring part on it to move up and down, thereby entering or leaving the sample container to complete the stirring and mixing task. In the application, the movement of the electromagnetic slider 5 can be replaced by other methods, such as electric push rods, etc., which are not limited here.

[0030] U-shaped movable plates 6 pass through both sides of the electromagnetic slider 5, and springs 7 connect the U-shaped movable plates 6 and the electromagnetic slider 5. A second mounting plate 8 is installed at the end of the U-shaped movable plate 6 away from the first mounting plate 1. A mounting chamber 9 is installed at the end of the second mounting plate 8 away from the electromagnetic slider 5. A stirring needle 10 passes through one side of the bottom of the mounting chamber 9. The stirring needle 10 and the mounting chamber 9 are rotatably connected, and the U-shaped movable plates 6 and the electromagnetic slider 5 are slidably connected. This allows the stirring needle 10 to not only rotate to complete the stirring and mixing task under the action of a corresponding external force, but also to vibrate slightly, thereby preventing the sample from forming a stable vortex that would affect the final mixing effect.

[0031] The mounting chamber 9 is equipped with a drive mechanism for rotating the stirring needle 10. The drive mechanism includes a third mounting plate 11, which is mounted on the top of the mounting chamber 9. A motor 12 is mounted on the bottom side of the third mounting plate 11 away from the stirring needle 10. The output end of the motor 12 is connected to an output shaft 13, which passes through the mounting chamber 9. A first pulley assembly 14 is connected between the output shaft 13 and the stirring needle 10. The output shaft 13 and the mounting chamber 9 are rotatably connected, so that the motor 12 can drive the output shaft 13 to rotate, thereby enabling the stirring needle 10 to complete the rotation task. Furthermore, the stirring needle 10 can be connected to the third mounting plate 11 through a bearing to ensure that it remains stable with the mounting chamber 9 during rotation.

[0032] A first bevel tooth 15 is installed on the outer side of the stirring needle 10, a support member 16 is installed at the bottom of the mounting chamber 9, and a rotating shaft 17 passes through both ends inside the support member 16. An eccentric wheel 18 is installed at one end of the rotating shaft 17 near the first mounting plate 1, and the rotating shaft 17 and the support member 16 are connected by a bearing.

[0033] The mounting chamber 9 is equipped with a transmission mechanism for driving the rotating shaft 17 to rotate. The transmission mechanism includes a transmission shaft 19, which passes through the interior of the mounting chamber 9 near the first mounting plate 1. A second bevel tooth 20 is installed on the end of the transmission shaft 19 near the mounting chamber 9, and a second pulley assembly 21 is connected between the transmission shaft 19 and the rotating shaft 17. The second bevel tooth 20 is perpendicular to the first bevel tooth 15 and the second bevel tooth 20 and the first bevel tooth 15 are meshed. The transmission shaft 19 is connected to the mounting chamber 9 through a bearing, so that when the stirring needle 10 rotates, the transmission shaft 19 can rotate with it, and the rotating shaft 17 rotates with it. Under the action of the eccentric wheel 18, the entire second mounting plate 8 is vibrated, so that the stirring needle 10 vibrates continuously while rotating.

[0034] It should be noted that, through the design of the U-shaped movable plate 6 and the electromagnetic slider 5, the vibration amplitude of the stirring needle 10 is limited to a size much smaller than the opening of the sample vessel, thus avoiding unnecessary damage to the vessel.

[0035] Example 2

[0036] Based on the above embodiment 1, as Figures 1-7 As shown, the first mounting plate 1 has a mounting groove 22 at one end near the electromagnetic slider 5, and the U-shaped movable plate 6 has an extrusion member 23 installed at one end near the mounting groove 22. The extrusion member 23 extends into the interior of the mounting groove 22. The U-shaped movable plate 6 and the extrusion member 23 can be made as a single unit to ensure strength during use.

[0037] A fixing plate 24 is installed on one side inside the mounting groove 22, and arc-shaped protrusions 25 are evenly installed on the side of the fixing plate 24 near the extruder 23. This allows the extruder 23 to intermittently press against the arc-shaped protrusions 25 when the electromagnetic slider 5 moves the mounting chamber 9 upward after stirring is completed. This causes the mounting chamber 9 to vibrate during the process, which can shake the sample attached to the stirring needle 10 into the container below, thus preventing the sample on the stirring needle 10 from dripping onto the equipment and causing contamination during subsequent cleaning activities.

[0038] It should be noted that the length of the fixing plate 24 is less than the height of the first mounting plate 1, so as to avoid the squeezing member 23 and the arc-shaped protrusion 25 forming a squeezing effect on the vibration of the stirring pin 10 during the stirring process when the stirring pin 10 is inserted into the sample vessel.

[0039] The working principle of this utility model is as follows: The device is installed on the driving equipment of the stirring system of the biochemical analyzer and the power is turned on. When in use, the driving equipment of the stirring system of the biochemical analyzer drives the stirring needle 10 to move above the sample vessel. The electromagnetic slider 5 drives the stirring needle 10 to move downward and insert into the sample vessel. The motor 12 is turned on, and the motor 12 drives the output shaft 13 to rotate, so that the stirring needle 10 rotates to stir and mix the sample. At the same time, the stirring needle 10 drives the transmission shaft 19 to rotate, the rotating shaft 17 rotates, and drives the eccentric wheel 18 to rotate. The eccentric wheel 18 gives vibration to the U-shaped movable plate 6 and its upper part, so that the stirring needle 10 vibrates during the stirring process, thereby increasing the mixing effect.

[0040] After the mixing is complete, the motor 12 is turned off to prevent safety hazards from occurring during the subsequent rise of the stirring needle 10 or to completely fling the sample attached to it to the surrounding area. The electromagnetic slider 5 drives the second mounting plate 8 to move upward. After rising a certain distance, the extruder 23 moves to the area where the arc-shaped protrusions 25 are distributed. During the subsequent rise, the extruder 23 can intermittently press against the arc-shaped protrusions 25, causing the second mounting plate 8 to drive the stirring needle 10 to shake, thereby shaking the sample attached to the stirring needle 10 into the container below.

[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 speed-adjustable stirring device for a biochemical analyzer, comprising a first mounting plate (1), characterized in that: The first mounting plate (1) has a groove (4) at one end, and an electromagnetic slider (5) is provided inside the groove (4); The electromagnetic slider (5) has U-shaped movable plates (6) running through both sides, and a spring (7) is connected between the U-shaped movable plates (6) and the electromagnetic slider (5). A second mounting plate (8) is installed at the end of the U-shaped movable plate (6) away from the first mounting plate (1). A mounting chamber (9) is installed at the end of the second mounting plate (8) away from the electromagnetic slider (5). A stirring needle (10) runs through one side of the bottom of the mounting chamber (9). A drive mechanism for driving the stirring needle (10) to rotate is provided on the mounting chamber (9). The stirring needle (10) is equipped with a first bevel tooth (15) on its outer side. The bottom of the mounting chamber (9) is equipped with a support member (16), and the two ends of the support member (16) are connected by a rotating shaft (17). An eccentric wheel (18) is installed at one end of the rotating shaft (17) near the first mounting plate (1). The mounting chamber (9) is equipped with a transmission mechanism for driving the rotating shaft (17) to rotate. The first mounting plate (1) has a mounting groove (22) at one end near the electromagnetic slider (5), and the U-shaped movable plate (6) has an extrusion member (23) installed at one end near the mounting groove (22), and the extrusion member (23) extends into the interior of the mounting groove (22).

2. The speed-adjustable stirring device for a biochemical analyzer according to claim 1, characterized in that, The first mounting plate (1) has mounting plates (2) installed on both sides, and mounting holes (3) are provided at the top and bottom of one end of the mounting plate (2).

3. The adjustable-speed stirring device for a biochemical analyzer according to claim 1, characterized in that, The drive mechanism includes a third mounting plate (11), which is mounted on the top of the mounting chamber (9). A motor (12) is mounted on the bottom side of the third mounting plate (11) away from the stirring needle (10). The output end of the motor (12) is connected to an output shaft (13), which passes through the mounting chamber (9). A first pulley assembly (14) is connected between the output shaft (13) and the stirring needle (10).

4. The adjustable-speed stirring device for a biochemical analyzer according to claim 1, characterized in that, The transmission mechanism includes a transmission shaft (19) that passes through the interior of the mounting chamber (9) near the first mounting plate (1). A second bevel gear (20) is installed on the end of the transmission shaft (19) near the mounting chamber (9), and a second pulley assembly (21) is connected between the transmission shaft (19) and the rotating shaft (17).

5. The adjustable-speed stirring device for a biochemical analyzer according to claim 4, characterized in that, The second bevel tooth (20) is perpendicular to the first bevel tooth (15), and the second bevel tooth (20) and the first bevel tooth (15) are meshed together.

6. The adjustable-speed stirring device for a biochemical analyzer according to claim 1, characterized in that, A fixing plate (24) is installed on one side inside the mounting groove (22), and arc-shaped protrusions (25) are evenly installed on the side of the fixing plate (24) near the extruder (23).

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