CN210269881U

CN210269881U - Reaction disk in biochemical analyzer

Info

Publication number: CN210269881U
Application number: CN201921086042.6U
Authority: CN
Inventors: 莫凡; 肖仕琪; 赵洁
Original assignee: Eighth Affiliated Hospital of Sun Yat Sen University
Current assignee: Eighth Affiliated Hospital of Sun Yat Sen University
Priority date: 2019-07-11
Filing date: 2019-07-11
Publication date: 2020-04-07
Anticipated expiration: 2029-07-11

Abstract

The utility model discloses a reaction disk in a biochemical analyzer, which is provided with a socket for one end of a reaction cup component to pass through, wherein the socket is provided with a second permanent magnet and an electromagnet component, the second permanent magnet is matched with a first permanent magnet in the reaction cup component to suspend the reaction cup component, and the electromagnet component is matched with a permanent magnet component in the reaction cup component to rotate the reaction cup component; and the electromagnet assembly is electrified with alternating current. The reaction disc can improve the detection accuracy of the biochemical analyzer.

Description

Reaction disk in biochemical analyzer

Technical Field

The utility model relates to a biochemical analysis appearance technical field especially relates to the reaction dish among the biochemical analysis appearance.

Background

The medical diagnosis and treatment needs to use a biochemical analyzer to carry out biochemical inspection and analysis on a patient sample. Biochemical analyzers generally consist of a housing, a mechanical transport system, a stirring system, a cleaning system, a reagent loading system, a detection system, a control system, a reaction system, and the like. The reaction system generally comprises a reaction disc and a reaction cup, and is a main component of biochemical reaction and detection. The reaction disc bears the reaction cup, it is constructed as to have a plurality of discs used for inserting the open pore of reaction cup on it, the centre of a circle has spindles connected to biochemical apparatus, the work is that the spindle is controlled by the control system of biochemical apparatus to rotate, thus make the position of the reaction cup on the rotary table change in order to realize the detection; the reaction cup is generally a cuboid with an opening at the top end, a closed bottom end and four closed surfaces, and two opposite surfaces of the cuboid are transparent and are used for observing and detecting the change of the transmittance of an object to be detected in the reaction cup before and after the reaction with a reagent, so that a detection result is obtained. The other two opposite surfaces are opaque, so that the hand-held mounting, dismounting and cleaning are convenient.

At present, a biochemical analyzer detects the change of transmittance of a specimen and a reagent before and after reaction according to the Lambert-beer law, and then a control system carries out statistical calculation to obtain a detection result, so that the specimen and the reagent are required to react uniformly, the specimen and the reagent are required to be fully mixed, a stirring system is required to be matched, and a stirring needle of the stirring system can enable reaction liquid of the specimen and the reagent to be fully mixed. However, in practice, the use of a stirring pin may affect the reaction in many ways, resulting in inaccurate test results or a biological safety hazard:

1. in order to improve the inspection speed of modern biochemical analysis, reaction cups as many as possible are loaded on a reaction disc to respectively inspect different items, and generally, only two sets of stirring systems are provided, so that stirring pins can be used in different reaction cups in a crossed manner, which may cause cross contamination between different samples and different inspection items due to unclean cleaning of the stirring pins, and thus, the accuracy of the inspection result is affected.

2. The stirring pin rotating at high speed stirs in the reaction liquid, and micro bubbles may be generated due to vortex action, which affects the transmittance of the reaction liquid and the accuracy of the test result.

3. The stirring needle has a certain volume, the reaction cup is generally small in volume, the stirring needle extends into the reaction liquid to lift the liquid level, the stirring needle rotates at a high speed, the reaction liquid is easy to splash out of the reaction cup, on one hand, the reaction in the adjacent reaction cup is polluted, the result accuracy is influenced, and on the other hand, the reaction liquid splashes possibly to have biological potential safety hazards (a sample may carry germs and the like).

In summary, there is a need for an improved reflective plate in the existing biochemical analyzer to change the stirring process of the reaction solution, thereby overcoming the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the reaction disc can be matched with a reaction cup assembly with a permanent magnet, so that the traditional stirring mode of reaction liquid is changed, and the detection accuracy of the biochemical analyzer is improved.

In order to solve the technical problem, the utility model discloses a technical scheme be: a reaction disc in the biochemical analyzer is provided with a socket for one end of a reaction cup assembly to pass through, the socket is provided with a second permanent magnet and an electromagnet assembly, the second permanent magnet is matched with a first permanent magnet in the reaction cup assembly to enable the reaction cup assembly to suspend, and the electromagnet assembly is matched with a permanent magnet assembly in the reaction cup assembly to enable the reaction cup assembly to rotate; and the electromagnet assembly is electrified with alternating current.

Further, the permanent magnet assembly comprises two third permanent magnets which are oppositely arranged, and the magnetic force of the two third permanent magnets is not equal; the electromagnet assembly comprises a first electromagnet and a second electromagnet which are oppositely arranged, the first electromagnet and the second electromagnet are respectively electrified with alternating current, and the permanent magnet assembly is positioned between the first electromagnet and the second electromagnet.

Further, the permanent magnet assembly comprises two third permanent magnets which are oppositely arranged, and the magnetic force of the two third permanent magnets is not equal; the electromagnet assembly comprises a U-shaped iron core and a winding wound on the iron core, the winding is electrified with alternating current, and the permanent magnet assembly is positioned in the iron core.

Further, including the body with demountable installation be in reaction dish annex on the body, the socket is located on the body, electromagnet assembly reaches the second permanent magnet is located respectively on the reaction dish annex, be equipped with the conducting wire on the body, electromagnet assembly with the conducting wire switches on.

Furthermore, the body is also provided with a first electrode point connected with the conductive circuit, the reaction disk accessory is provided with a second electrode point electrically connected with the electromagnet assembly, and the second electrode point is in point contact conduction with the first electrode point.

The device further comprises a rack, a rotating shaft and a conductive sliding ring, wherein the fixed end of the conductive sliding ring is installed on the rack, the sliding end of the conductive sliding ring is installed on the body, the conductive sliding ring is electrically connected with the conductive circuit, and the body is connected with the rotating shaft.

Furthermore, the output end of the conductive slip ring is provided with a first conductive terminal, and one end of the conductive circuit, which is far away from the first electrode point, is provided with a second conductive terminal which is in plug-in fit with the first conductive terminal.

Further, at least a portion of the reaction disk attachment is insert-mounted within the socket.

Furthermore, the reaction disc is formed by splicing a plurality of fan-shaped blocks.

Furthermore, two adjacent fan-shaped blocks are connected through a buckle structure or a magnetic attraction structure.

The beneficial effects of the utility model reside in that: the traditional stirring mode of stirring by using stirring needles is abandoned, the reaction cup assembly is suspended and rotated by the reaction disk under the action of magnetic force, so that the purpose of stirring reaction liquid is achieved, the problem of cross contamination caused by the cross use of the stirring needles is effectively avoided, the accuracy of the detection result of the biochemical analyzer is improved, in addition, the reaction liquid is not inserted by the stirring needles in the rotating and stirring process, the occurrence of bubbles can be reduced or even eliminated, the influence on the transmittance of the reaction liquid is avoided, and the accuracy of the detection result of the biochemical analyzer is further improved; meanwhile, the liquid level of the reaction liquid is lifted due to the fact that no stirring needle is inserted, the reaction liquid cannot splash all around in the process of rotary stirring, the situation that the reaction liquid pollutes detection liquid in adjacent reaction cups is effectively avoided, accuracy of detection results is guaranteed, and moreover, the reaction liquid cannot splash and biological safety can be guaranteed.

Drawings

Fig. 1 is a schematic view of an overall structure of a reaction disk in a biochemical analyzer according to a first embodiment of the present invention;

fig. 2 is a partial sectional view of a reaction disk in a biochemical analyzer according to a first embodiment of the present invention;

FIG. 3 is a schematic structural view of an attachment of a reaction cup according to a first embodiment of the present invention;

fig. 4 is a schematic structural view of a reaction disk accessory in a reaction disk according to a first embodiment of the present invention;

fig. 5 is a top view of a splicing reaction plate according to a first embodiment of the present invention;

FIG. 6 is a schematic view showing the fitting of the attachment of the reaction cup and the attachment of the reaction tray according to the second embodiment of the present invention;

fig. 7 is a schematic view of the reaction cup accessory and the reaction tray accessory according to the third embodiment of the present invention.

Description of reference numerals:

1. a reaction cup; 2. a reaction disc; 3. a reaction cup accessory; 4. a permanent magnet assembly; 5. an electromagnet assembly; 6. a shoulder portion; 7. a first permanent magnet; 8. a second permanent magnet; 9. a supporting sleeve body; 10. a third permanent magnet; 11. A first electromagnet; 12. a second electromagnet; 13. a body; 14. a reaction disk accessory; 15. a rotating shaft; 16. A sector block; 17. a socket; 18. an iron core; 19. winding; 20. and a third electromagnet.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 7, a reaction disk 2 in a biochemical analyzer is provided with a socket 17 for one end of a reaction cup assembly to pass through, a second permanent magnet 8 and an electromagnet assembly 5 are arranged at the socket 17, the second permanent magnet 8 is matched with a first permanent magnet 7 in the reaction cup assembly to suspend the reaction cup assembly, and the electromagnet assembly 5 is matched with a permanent magnet assembly 4 in the reaction cup assembly to rotate the reaction cup assembly; the electromagnet assembly 5 is energized with alternating current.

The structure/working principle of the utility model is as follows: utilize the magnetic force effect between electromagnet assembly 5 and the permanent magnet subassembly 4 to order about the reaction cup subassembly rotatory in order to drive reaction cup 1 and rotate to the change that utilizes the electric current flow direction of alternating current to let the direction of rotation of reaction cup subassembly change, thereby make the reaction liquid in the reaction cup 1 obtain the stirring.

From the above description, the beneficial effects of the present invention are: the traditional stirring mode of stirring by using stirring needles is abandoned, the reaction cup assembly is suspended and rotated by the reaction disk under the action of magnetic force, so that the purpose of stirring reaction liquid is achieved, the problem of cross contamination caused by the cross use of the stirring needles is effectively avoided, the accuracy of the detection result of the biochemical analyzer is improved, in addition, the reaction liquid is not inserted by the stirring needles in the rotating and stirring process, the occurrence of bubbles can be reduced or even eliminated, the influence on the transmittance of the reaction liquid is avoided, and the accuracy of the detection result of the biochemical analyzer is further improved; meanwhile, the liquid level of the reaction liquid is lifted due to the fact that no stirring needle is inserted, the reaction liquid cannot splash all around in the process of rotary stirring, the situation that the reaction liquid pollutes detection liquid in adjacent reaction cups is effectively avoided, accuracy of detection results is guaranteed, and moreover, the reaction liquid cannot splash and biological safety can be guaranteed.

Further, the permanent magnet assembly 4 comprises two third permanent magnets 10 which are oppositely arranged, and the magnetic forces of the two third permanent magnets 10 are not equal; the electromagnet assembly 5 comprises a first electromagnet 11 and a second electromagnet 12 which are arranged oppositely, the first electromagnet 11 and the second electromagnet 12 are respectively electrified with alternating current, and the permanent magnet assembly 4 is positioned between the first electromagnet 11 and the second electromagnet 12.

As can be seen from the above description, when the electromagnet assembly is electrified, the magnetic force exerted on the two third permanent magnets is different due to the different magnetic forces of the two third permanent magnets, so that the reaction cup assembly can rotate. At the same moment, first, two electro-magnets are close to the polarity of the one end of permanent magnet subassembly is the same, so, not only can improve the response speed of reaction cup subassembly, improves stirring efficiency, can also avoid the reaction cup subassembly displacement to appear in the horizontal plane, does benefit to the job stabilization nature who improves biochemical analyzer.

Further, the permanent magnet assembly 4 comprises two third permanent magnets 10 which are oppositely arranged, and the magnetic forces of the two third permanent magnets 10 are not equal; the electromagnet assembly 5 comprises a U-shaped iron core 18 and a winding 19 wound on the iron core 18, the winding 19 is electrified with alternating current, and the permanent magnet assembly 4 is positioned in the iron core 18.

As can be seen from the above description, the electromagnet assembly has a simple structure and low manufacturing cost, and is beneficial to controlling the manufacturing cost of the reaction disc.

Further, including body 13 and demountable installation reaction dish annex 14 on body 13, socket 17 is located on body 13, electromagnet assembly 5 reaches second permanent magnet 8 is located respectively on reaction dish annex 14, be equipped with the conducting wire on body 13, electromagnet assembly 5 with the conducting wire switches on.

Further, a first electrode point connected with the conductive circuit is further arranged on the body 13, a second electrode point electrically connected with the electromagnet assembly 5 is arranged on the reaction disk accessory 14, and the second electrode point is in contact conduction with the first electrode point.

As can be seen from the above description, when the electromagnet assembly or the second permanent magnet is damaged, the above structure can bring great convenience to maintenance work; meanwhile, when a manufacturer assembles the reaction disc, the structure can accelerate the assembly efficiency and reduce the assembly cost.

Further, the device comprises a rack, a rotating shaft 15 and a conductive slip ring, wherein the fixed end of the conductive slip ring is installed on the rack, the sliding end of the conductive slip ring is installed on the body 13, the conductive slip ring is electrically connected with the conductive circuit, and the body 13 is connected with the rotating shaft 15.

According to the description, the conductive slip ring can enable the body to rotate clockwise or anticlockwise for a long time without the phenomenon of wiring interlacing, and the working stability of the reaction disc is guaranteed.

From the above description, the electrical connection between the conductive slip ring and the body is simple and stable.

As can be seen from the above description, the reaction disk accessory and the body mounting structure are stable, occupy small space and are beneficial to the miniaturization of the biochemical analyzer.

Further, the reaction disc 2 is formed by splicing a plurality of fan-shaped blocks 16.

According to the description, the reaction disc with different numbers of the sockets can be assembled by a user according to needs, so that the universality of the reaction disc is improved, and the machine purchasing cost of the user is reduced.

Furthermore, two adjacent segments 16 are connected by a snap structure or a magnetic structure.

As can be seen from the above description, the reaction disc has a stable structure and is fast to assemble.

Example one

Referring to fig. 1 to 5, a first embodiment of the present invention is: referring to fig. 1 and 2, a reaction generating mechanism in a biochemical analyzer includes a reaction tray 2 and a reaction cup assembly, which are matched with each other, in this embodiment, the reaction cup assembly includes a reaction cup 1 and a reaction cup accessory 3 fixedly connected to the reaction cup 1, the reaction cup accessory 3 includes a permanent magnet assembly 4, a first permanent magnet 7 and a supporting sleeve 9, the permanent magnet assembly 4 and the first permanent magnet 7 are respectively disposed on the supporting sleeve 9, and the first permanent magnet 7 is located below the permanent magnet assembly 4. Specifically, a socket 17 is arranged on the reaction disc 2, one end of the reaction cup 1 penetrates through the socket 17, a second permanent magnet 8 and an electromagnet assembly 5 are arranged at the socket 17, the second permanent magnet 8 is matched with a first permanent magnet 7 in the reaction cup assembly to enable the reaction cup assembly to suspend, and the electromagnet assembly 5 is matched with a permanent magnet assembly 4 in the reaction cup assembly to enable the reaction cup assembly to rotate; the electromagnet assembly 5 is energized with alternating current. In more detail, the first permanent magnet 7 is located right above the second permanent magnet 8, and the polarities of the first permanent magnet 7 and the second permanent magnet 8 are the same, and as the polarities of the first permanent magnet and the second permanent magnet are the same, a repulsive force exists between the first permanent magnet and the second permanent magnet, so that the reaction cup accessories 3 can be suspended relative to the reaction disk 2.

In this embodiment, the reaction cup 1 is made of transparent material, and the cross section of the reaction cup 1 is T-shaped, so that the reaction cup 1 has a shoulder portion 6.

Optionally, reaction cup 1 is including having the open-ended supporting body and sealing the open-ended lid, and the supporting body is used for splendid attire reaction liquid, and the lid can be dismantled with the supporting body and be connected, so, can ensure that the reaction liquid in reaction cup 1 can not accidentally swing out when stirring, does benefit to the accuracy of further assurance testing result.

As shown in fig. 2, the reaction cup accessory 3 further includes a first permanent magnet 7 located below the permanent magnet assembly 4, a second permanent magnet 8 having the same polarity as the first permanent magnet 7 is disposed on the reaction disk 2, and the first permanent magnet 7 is located right above the second permanent magnet 8. As the polarities of the first and second permanent magnets are the same, a repulsive force exists between the first and second permanent magnets, so that the reaction cup accessories 3 can be suspended relative to the reaction disk 2.

Referring to fig. 2 and 3, the supporting sleeve 9 is sleeved on the reaction cup 1 and located below the shoulder 6, specifically, the first and second permanent magnets are respectively annular, and the first permanent magnet 7 is sleeved on the supporting sleeve 9. In order to avoid relative rotation between the reaction cup 1 and the supporting sleeve body 9, optionally, the top surface of the supporting sleeve body 9 is provided with a protrusion extending upwards, and the bottom surface of the shoulder 6 of the reaction cup 1 is provided with a groove matched with the protrusion.

As shown in fig. 3, the permanent magnet assembly 4 includes two third permanent magnets 10 disposed oppositely, the two third permanent magnets 10 repel each other, and the magnetic forces of the two third permanent magnets 10 are not equal. When the two third permanent magnets 10 are made of the same material, the two third permanent magnets 10 may have different magnetic forces by setting the contour sizes of the two third permanent magnets 10 to be different.

Referring to fig. 2 and 4, in the present embodiment, the electromagnet assembly 5 includes a first electromagnet 11 and a second electromagnet 12 that are oppositely disposed, the first electromagnet 11 and the second electromagnet 12 are respectively energized with alternating current, and the permanent magnet assembly 4 is located between the first electromagnet 11 and the second electromagnet 12.

Referring to fig. 1, 2 and 4, for convenience of maintenance and assembly, the reaction disk 2 includes a main body 13 and a reaction disk accessory 14 detachably mounted on the main body 13, the socket 17 is disposed on the main body 13, the electromagnet assembly 5 and the second permanent magnet 8 are respectively disposed on the reaction disk accessory 14, the main body 13 is provided with a conductive circuit and a first electrode point connected to the conductive circuit, the reaction disk accessory 14 is provided with a second electrode point electrically connected to the electromagnet assembly 5, and the second electrode point is in contact conduction with the first electrode point. Optionally, at least a portion of the reaction disk attachment 14 is insert-mounted within the socket 17.

The conductive slip ring is characterized by further comprising a rack, a rotating shaft 15 and a conductive slip ring, wherein the fixed end of the conductive slip ring is installed on the rack, the sliding end of the conductive slip ring is installed on the body 13, the conductive slip ring is electrically connected with the conductive circuit, the body 13 is connected with the rotating shaft 15, and preferably, the body 13 is detachably connected with the rotating shaft 15.

The output end of the conductive slip ring is provided with a first conductive terminal, and one end of the conductive circuit, which is far away from the first electrode point, is provided with a second conductive terminal which is in plug-in fit with the first conductive terminal.

As shown in fig. 5, optionally, the reaction disk 2 is formed by splicing a plurality of segments 16, in this embodiment, each segment 16 is provided with at least one socket 17; two adjacent fan-shaped blocks 16 are connected through a buckle structure or a magnetic attraction structure to improve the structural stability of the reaction disc 2; in other embodiments, the socket 17 is provided on a portion of the segments 16, and the socket 17 is not provided on another portion of the segments 16.

The structure enables a user to rapidly assemble a plurality of fan-shaped blocks 16 with different sizes of the socket 17 (the fan-shaped blocks 16 are provided with the second conductive terminals) to form the reaction disc 2, or form the reaction discs 2 with different sizes to be matched with biochemical analyzers of different models, so that diversification of the reaction discs 2 is favorably realized, the universality of the reaction generating mechanism is enhanced, and the machine purchasing cost of the user is saved.

The operation of the reaction generating mechanism of this embodiment is briefly described as follows: firstly, the reaction cup 1 is put into the supporting sleeve body 9 of the reaction cup accessory 3, then the supporting sleeve body 9 is placed above the socket 17 of the reaction disc 2, the reaction cup accessory 3 is suspended by utilizing repulsion force between the first permanent magnet and the second permanent magnet, then the electromagnet assembly 5 is conducted to generate magnetic force, so that the permanent magnet assembly 4 drives the reaction cup 1 to rotate, the rotation direction of the reaction cup 1 is changed by the change of the magnetic force direction of the electromagnet assembly 5, and the aim of stirring reaction liquid in the reaction cup 1 is fulfilled.

Example two

Referring to fig. 1 to 6, another technical solution proposed by the second embodiment of the present invention is a structure of an electromagnet assembly 5 on the basis of the first embodiment, which is different from the first embodiment in that: the electromagnet assembly 5 comprises an iron core 18 in a U shape and a winding 19 wound on the iron core 18, the winding 19 is electrified with alternating current, and the permanent magnet assembly 4 is positioned in the iron core 18 and close to an opening of the iron core 18.

EXAMPLE III

Referring to fig. 1 to 5 and 7, a third embodiment of the present invention is another technical solution provided for a structure of the electromagnet assembly 5, a structure of the permanent magnet assembly 4 and a cooperation therebetween on the basis of the first embodiment, and is different from the first embodiment in that: the electromagnet assembly 5 comprises a third electromagnet 20, the permanent magnet assembly 4 comprises a third permanent magnet 10 arranged on the outer side of the supporting sleeve body 9, the magnetic pole orientation of the third electromagnet 20 is arranged in a tangent manner with the motion track of the third permanent magnet 10, it should be noted that, because the electromagnet assembly 5 can drive the reaction cup accessory 3 to rotate, the motion track of the third permanent magnet 10 is a circular ring (as shown by a dotted line in the figure), and the magnetic pole orientation of the third electromagnet 20 is in a tangent manner with the circular ring. In addition, it is also different from the first embodiment in that the number of the third permanent magnets 10 may be only one.

In addition, since the third electromagnet 20 is energized with ac current, the third electromagnet 20 can repel and attract the third permanent magnet 10, thereby rotating the cuvette attachment 3. Optionally, the third electromagnet 20 is intermittently turned on (or called as pulse type conduction), so that loss of the rotational kinetic energy of the cuvette accessory 3 caused by the third electromagnet 20 is avoided, and the rotational speed of the cuvette accessory 3 is slowed down, so that the cuvette accessory 3 can more smoothly change the rotational direction.

To sum up, the biochemical analyzer plate provided by the utility model can be matched with a reaction cup component with a permanent magnet, so that the traditional stirring mode of reaction liquid is changed, and the detection accuracy of the biochemical analyzer is effectively improved; the reaction disk accessory electrically connected with the reaction disk body is arranged, so that subsequent maintenance is facilitated; the reaction disc is formed by splicing a plurality of fan-shaped blocks, and the fan-shaped blocks are respectively connected with the conductive slip ring in an inserting mode, so that the universality of the reaction disc is improved to a great extent, and the machine purchasing cost of a user is reduced.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. Reaction disc among the biochemical analysis appearance is equipped with the socket that supplies one end of reaction cup subassembly to pass on it, its characterized in that: the socket is provided with a second permanent magnet and an electromagnet assembly, the second permanent magnet is matched with the first permanent magnet in the reaction cup assembly to enable the reaction cup assembly to suspend, and the electromagnet assembly is matched with the permanent magnet in the reaction cup assembly to enable the reaction cup assembly to rotate; and the electromagnet assembly is electrified with alternating current.

2. The reaction disk in biochemical analyzer according to claim 1, wherein: the permanent magnet assembly comprises two third permanent magnets which are oppositely arranged, and the magnetic force of the two third permanent magnets is not equal; the electromagnet assembly comprises a first electromagnet and a second electromagnet which are oppositely arranged, the first electromagnet and the second electromagnet are respectively electrified with alternating current, and the permanent magnet assembly is positioned between the first electromagnet and the second electromagnet.

3. The reaction disk in biochemical analyzer according to claim 1, wherein: the permanent magnet assembly comprises two third permanent magnets which are oppositely arranged, and the magnetic force of the two third permanent magnets is not equal; the electromagnet assembly comprises a U-shaped iron core and a winding wound on the iron core, the winding is electrified with alternating current, and the permanent magnet assembly is positioned in the iron core.

4. The reaction disk in biochemical analyzer according to claim 1, wherein: the reaction disk comprises a body and a reaction disk accessory which is detachably mounted on the body, wherein a socket is formed in the body, an electromagnet assembly and a second permanent magnet are respectively arranged on the reaction disk accessory, a conductive circuit is formed in the body, and the electromagnet assembly is communicated with the conductive circuit.

5. The reaction disk in biochemical analyzer according to claim 4, wherein: the body is also provided with a first electrode point connected with the conductive circuit, the reaction disk accessory is provided with a second electrode point electrically connected with the electromagnet assembly, and the second electrode point is in point contact conduction with the first electrode point.

6. The reaction disk in biochemical analyzer according to claim 5, wherein: the conductive slip ring is characterized by further comprising a rack, a rotating shaft and a conductive slip ring, wherein the fixed end of the conductive slip ring is installed on the rack, the sliding end of the conductive slip ring is installed on the body, the conductive slip ring is electrically connected with the conductive circuit, and the body is connected with the rotating shaft.

7. The reaction disk in biochemical analyzer according to claim 6, wherein: the output end of the conductive slip ring is provided with a first conductive terminal, and one end of the conductive circuit, which is far away from the first electrode point, is provided with a second conductive terminal which is in plug-in fit with the first conductive terminal.

8. The reaction disk in biochemical analyzer according to claim 4, wherein: at least a portion of the reaction disk attachment is insert mounted within the socket.

9. The reaction disk in biochemical analyzer according to claim 1, wherein: the reaction disc is formed by splicing a plurality of fan-shaped blocks.

10. The reaction disk in biochemical analyzer according to claim 9, wherein: two adjacent fan-shaped blocks are connected through a buckle structure or a magnetic attraction structure.