Cold source side supply reagent system

Abstract

The utility model discloses a cold source side supply reagent system, which comprises a reagent bin, a refrigeration module and a driving mechanism, a tray for storing reagents is rotatably mounted in the reagent bin, and the driving mechanism is used for driving the tray to rotate; an assembling notch is formed in the side portion of the reagent bin, the refrigeration module comprises a semiconductor refrigeration element and a cold circulation fan, the semiconductor refrigeration element is provided with a hot side and a cold side, the semiconductor refrigeration element is installed at the position of the assembling notch, the cold side is located in the reagent bin, the hot side is located outside the reagent bin, and the cold circulation fan is installed at the cold side. The LED lamp has the advantages that the cooling effect and the heat dissipation efficiency are improved, and meanwhile the LED lamp has the technical advantage of being simple and compact in structure.

Description

Technical Field

[0001] The utility model relates to a chemiluminescent immunoassay analyzer, in particular to a reagent system for cold source side supply. Background Art

[0002] Chemiluminescent immunoassay is an emerging analytical method that combines magnetic separation technology, chemiluminescence technology and immunoassay technology. It is widely used in hospital clinical diagnosis and other fields because of its advantages such as high accuracy, high sensitivity, short detection time, wide detection range and no pollution.

[0003] The physical structure of a chemiluminescent immunoassay analyzer usually includes several modules such as a reagent system, a sample addition system, a washing system, and an incubation system. Among them, the role of the reagent system is to provide the reagent components required for detection to the inside of the analyzer. In terms of physical structure, the reagent system includes a reagent compartment, in which a circular reagent tray is rotatably arranged, and multiple reagent racks are placed on the reagent tray. One reagent rack corresponds to a group of detection items. As the reagent tray rotates in the reagent compartment, the reagent components can be provided to the inside of the chemiluminescent immunoassay analyzer. Since the reagents used for chemiluminescent immunoassay detection need to be refrigerated and kept warm, a refrigeration device is usually set in the reagent compartment to prevent the reagents from deteriorating.

[0004] In the prior art, the refrigeration device is usually designed at the bottom of the reagent compartment, and a heat dissipation mechanism is provided on the outside. However, such a combination does not provide an ideal refrigeration effect and has a low heat dissipation efficiency, resulting in cold air only gathering at the bottom of the reagent tray and uneven temperature inside the reagent. At the same time, such a structural design has technical defects such as complicated structure and large-scale equipment, which occupies a large height space and is not conducive to the compact and miniaturized design of the whole machine. Utility Model Content

[0005] In view of this, the utility model provides a reagent system for cold source side supply, which has a simple and compact structure and has the technical advantages of high heat dissipation efficiency and good cooling effect.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A reagent system for cold source side supply, the key of which is: comprising a reagent bin, a refrigeration module and a driving mechanism, wherein a tray for storing reagents is rotatably installed in the reagent bin, and the driving mechanism is used to drive the tray to rotate;

[0008] An assembly notch is provided on the side of the reagent chamber, and the refrigeration module includes a semiconductor refrigeration element and a cold circulation fan, wherein the semiconductor refrigeration element has a hot side and a cold side, the semiconductor refrigeration element is installed at the assembly notch position, and the cold side is located inside the reagent chamber, the hot side is located outside the reagent chamber, and the cold circulation fan is installed on the cold side.

[0009] With the above structure, the semiconductor refrigeration element of the refrigeration module is directly installed in the assembly notch on the side of the reagent bin, and the cold side of the semiconductor refrigeration element is located inside the reagent bin, so that the cold side can face the side of the reagent bottle on the tray, so that the cold capacity of the semiconductor refrigeration element can be directly applied to the reagent bottle. As the tray rotates, the reagents in each reagent bottle can be fully cooled, meeting the insulation and refrigeration requirements of the reagents in the reagent bin. At the same time, the cold circulation fan can blow cold air into the reagent bin, speeding up the air circulation speed and heat exchange speed inside the reagent bin, and improving the cooling efficiency.

[0010] Preferably, the refrigeration module further comprises a module housing installed outside the assembly notch, the module housing has a through heat dissipation channel, the hot side of the semiconductor refrigeration element is located in the heat dissipation channel, and a heat dissipation fan is provided at one end of the heat dissipation channel. The above structure can help the hot air on the hot side to be quickly discharged from the other end of the heat dissipation channel.

[0011] Preferably, the cold side of the semiconductor refrigeration element is provided with array-distributed cold end fins, and the cold circulation fan is arranged at the outer end of the cold end fins. With the above structure, the air is contacted with the cold end fins for heat exchange, so that the air temperature is reduced, and the air is sent into the reagent compartment by the cold circulation fan.

[0012] As a preference: each of the cold end fins is provided with notches in an array. The above structure can increase the contact area between the air and the cold end fins, so that the heat exchange between the airflow and the cold end fins is more sufficient.

[0013] Preferably, the hot side of the semiconductor cooling element is equipped with hot end fins, which are located in the heat dissipation channel; the hot end fins are arranged in an array along the vertical direction so that the air in the heat dissipation channel can pass through the gaps between the hot end fins. With the above structure, under the action of the heat dissipation fan, the air in the heat dissipation channel can fully contact the hot end fins, thereby helping the hot side of the semiconductor cooling element to dissipate heat quickly.

[0014] As a preferred embodiment, a heat preservation layer is arranged on the side wall of the reagent compartment. The above structure has the effect of heat preservation and refrigeration.

[0015] Preferably, the tray is provided with a clamping structure distributed along the circumference, and a reagent rack assembly is detachably placed on the clamping structure;

[0016] The reagent rack assembly includes a basic reagent rack, which is provided with three basic mounting holes distributed in a linear direction, each of which extends in the height direction of the basic reagent rack, and an expansion reagent rack is detachably installed on one side of the basic reagent rack, and the expansion reagent rack is provided with an expansion mounting hole extending in the height direction, and the expansion mounting hole and the three basic mounting holes are all used to place reagent bottles. With the above structure, the design of the tray can be compatible with reagent racks for three-component reagents and reagent racks for four-component reagents, and at the same time meet the needs of storing three-component or four-component reagents, so as to meet the project detection of different detection needs, and has the advantages of strong practicality and high compactness.

[0017] Preferably, the extended reagent rack is located on one side of the basic reagent rack in the width direction and corresponds to the middle position of the three basic mounting holes. With the above structure, when laying out the reagent structure on the tray, there is no need to expand the tray diameter to be compatible with the extended reagent rack.

[0018] Preferably, the tray is a circular tray, and the positioning structure includes first mounting grooves distributed in a circumferential array, the first mounting grooves are used to mount the basic reagent rack, and a second mounting groove is provided between two adjacent first mounting grooves, the second mounting groove is used to mount the extended reagent rack. The above structure is adopted to facilitate compatibility with reagent racks of three-component and four-component reagents.

[0019] Preferably, a rotating shaft rotatably matched with the reagent compartment is provided at the bottom of the tray, and the driving mechanism comprises a motor fixed at the bottom of the reagent compartment, and an output shaft of the motor is coaxially fixed to the lower end of the rotating shaft.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. The reagent system provided by the cold source side supply of the utility model is adopted, and the semiconductor refrigeration element of the refrigeration module is directly installed on the assembly notch of the reagent bin side, and the cold side of the semiconductor refrigeration element is located inside the reagent bin, so that the cold side can be directly opposite to the side of the reagent bottle on the tray, so that the cold capacity of the semiconductor refrigeration element can be directly applied to the reagent bottle, and as the tray rotates, the reagents in each reagent bottle can be fully cooled down, meeting the insulation and refrigeration requirements of the reagents in the reagent bin. At the same time, through the cold circulation fan, cold air can be blown into the reagent bin, which speeds up the air circulation speed and heat exchange speed inside the reagent bin and improves the cooling efficiency. Because the hot side of the semiconductor refrigeration element is located outside the reagent bin, the hot air can be discharged to the outside of the reagent bin in time to achieve rapid heat dissipation. Such a structural design is not only simple and compact in structure, but also does not take up extra height space, further ensuring the compact and miniaturized design of the system, and is particularly suitable for small batch and low-throughput chemiluminescence immunoassays.

[0022] 2. By evenly opening gaps on each cold-end fin, the heat exchange between the air and the cold-end fin is more complete, further improving the cooling efficiency.

[0023] 3. The reagent system with cold source side supply provided by the utility model can install more reagent bottles on the tray through reasonable layout, and can be compatible with reagent racks for three-component reagents and reagent racks for four-component reagents to meet the storage needs of three-component or four-component reagents, thereby being able to meet the project testing with different testing needs, and has the technical advantages of strong practicality and high compactness. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of the reagent system for the cold source side supply;

[0025] Figure 2 A cross-sectional view of a reagent system for supplying the cold source side;

[0026] Figure 3 Another cross-sectional view of the reagent system for the cold source side supply;

[0027] Figure 4 A three-dimensional cross-sectional view showing the internal structure of the reagent system for cold source side supply;

[0028] Figure 5 It is a structural schematic diagram of refrigeration module B;

[0029] Figure 6 It is a schematic diagram of the structure of the reagent rack component A;

[0030] Figure 7 is another structural schematic diagram of the reagent rack assembly A;

[0031] Figure 8 is a schematic structural diagram of a basic reagent rack 7;

[0032] Fig. 9 is a cross-sectional view of a reagent rack assembly A;

[0033] Fig.10 A reference diagram of the reagent rack assembly A in use;

[0034] Fig.11 A schematic diagram showing the layout of the reagent rack assembly A on the tray 2;

[0035] Fig.12 A schematic diagram showing a three-component reagent rack placed on tray 2;

[0036] Fig.13 This is a schematic diagram showing a four-component reagent rack placed on tray 2. DETAILED DESCRIPTION

[0037] The utility model is further described below in conjunction with embodiments and drawings.

[0038] like Figure 1 and Figure 2 As shown, a reagent system with cold source side supply includes a reagent chamber 1, a refrigeration module B and a driving mechanism 3, wherein a tray 2 for storing reagents is rotatably installed in the reagent chamber 1, the driving mechanism 3 is arranged at the bottom of the reagent chamber 1 and can drive the tray 2 to rotate, and an assembly notch 1a is provided on the side of the reagent chamber 1. Figure 4 and 5 It can be seen that the refrigeration module B includes a semiconductor refrigeration element 4 and a cold circulation fan 6, wherein the semiconductor refrigeration element 4 has a hot side 4a and a cold side 4b, the semiconductor refrigeration element 4 is installed at the assembly notch 1a, and the cold side 4b is located inside the reagent chamber 1, and the hot side 4a is located outside the reagent chamber 1, and the cold circulation fan 6 is installed on the cold side 4b, and the air outlet direction of the cold circulation fan 6 is facing the side of the reagent bottle.

[0039] Based on the above structural design, the semiconductor refrigeration element 4 of the refrigeration module B is directly mounted on the assembly notch 1a on the side of the reagent bin 1, and the cold side 4b of the semiconductor refrigeration element 4 is located inside the reagent bin 1, so that the cold side 4b can be directly opposite to the side of the reagent bottle on the tray 2, so that the cold capacity of the semiconductor refrigeration element 4 can be directly applied to the reagent bottle, and as the tray 2 rotates, the reagents in each reagent bottle can be fully cooled down, meeting the insulation and refrigeration requirements of the reagents in the reagent bin 1. At the same time, through the cold circulation fan 6, cold air can be blown to the inside of the reagent bin 1, accelerating the air circulation speed and heat exchange speed inside the reagent bin 1, so that the temperature inside the reagent bin 1 can be quickly reduced, and the cooling efficiency is improved. Since the hot side 4a of the semiconductor refrigeration element 4 is located outside the reagent bin 1, the hot air on the hot side 4a of the semiconductor refrigeration element 4 can be discharged to the outside of the reagent bin 1 in time to achieve rapid heat dissipation. Such a structural design is not only simple and compact in structure, but also does not occupy additional height space, further ensuring the compact and miniaturized design of the system, and is particularly suitable for small-batch, low-throughput chemiluminescence immunoassays.

[0040] Depend on Figure 3 It can be seen that in this embodiment, a heat-insulating layer 1 b is provided on the side wall of the reagent compartment 1 to meet the heat-insulating and refrigerating requirements of the reagent compartment 1 as a whole.

[0041] For further information, see Figure 1 and 2The refrigeration module B also includes a module shell B1 installed on the outside of the assembly notch 1a. The module shell B1 has a through heat dissipation channel a. The hot side 4a of the semiconductor refrigeration element 4 is located in the heat dissipation channel a. A heat dissipation fan B2 is provided at one end of the heat dissipation channel a. Under the action of the heat dissipation fan B2, the hot air on the hot side 4a can be quickly discharged from the other end of the heat dissipation channel a, further accelerating the heat dissipation efficiency.

[0042] Re-attend Figure 4 and 5 The cold side 4b of the semiconductor refrigeration element 4 is fixed with an array of cold end fins 5, and a cold circulation fan 6 is arranged at the outer end of the cold end fin 5. The air is contacted with the cold end fin 5 for heat exchange, so that the air temperature is reduced and the air is sent into the reagent chamber 1 by the cold circulation fan 6.

[0043] Depend on Figure 5 It can be seen that in this embodiment, each cold end fin 5 is provided with an array of notches 5a. Such a design can increase the contact area between the air and the cold end fin 5, so that the airflow and the cold end fin 5 can exchange heat more fully.

[0044] Please refer to Figure 4 The hot side 4a of the semiconductor cooling element 4 is equipped with hot end fins 4a1, which are arranged in an array in the vertical direction, and are located in the heat dissipation channel a. The air in the heat dissipation channel a can pass through the gaps between the hot end fins 4a1. With this design, under the action of the heat dissipation fan B2, the air in the heat dissipation channel a can fully contact the hot end fins 4a1, thereby helping the hot side 4a of the semiconductor cooling element 4 to quickly dissipate heat.

[0045] like Figure 1 , 2 As shown in Figures 4 and 5, in this embodiment, the outer shell of the reagent chamber 1 is constructed to be close to a cubic structure, and both sides of the assembly notch 1a thereof have arc segments 1a1 extending outward. The semiconductor refrigeration element 4 is arranged on the side of the module shell B1 away from the end of the heat dissipation fan B2. The semiconductor refrigeration element 4 on the side of the module shell B1 is directly fixed and embedded between the two arc segments 1a1 to ensure the installation space of the cold side 4b cold end fin 5 and the cold circulation fan 6. The other side of the module shell B1 has an inclined segment B11 and a parallel segment B12 connected in sequence, wherein the inclined segment B11 gradually inclines inward along the end where the heat dissipation fan B2 is installed, so that the heat dissipation channel a gradually narrows to the position of the parallel segment B12 along the end where the heat dissipation fan B2 is installed. Such a structural design can miniaturize and compact the structure as much as possible while ensuring the heat dissipation effect, reduce the occupied space, and can be suitable for small-batch and low-throughput chemiluminescence immunoassay analyzers. In addition, the inclined section B11 can make the internal space at one end of the heat dissipation fan B2 significantly larger than the air outlet end, thereby ensuring that sufficient air volume flows through the hot end fins 4a1.

[0046] Please refer to Figure 2 and 6 , the tray 2 is provided with a clamping structure distributed along the circumference, and a reagent rack assembly A is detachably placed on the clamping structure, and the reagent rack assembly A includes a basic reagent rack 7 and an extended reagent rack 8, wherein the basic reagent rack 7 is a strip-shaped structure, and the basic reagent rack 7 is provided with three basic installation holes 7a distributed along the linear direction, and the three basic installation holes 7a all extend along the height direction of the basic reagent rack 7, and the extended reagent rack 8 is provided with an extended installation hole 8a extending along the height direction, and the extended reagent rack 8 is detachably mounted on one side of the basic reagent rack 7. Both the basic installation hole 7a and the extended installation hole 8a are used to place reagent bottles (refer to Fig.10 ).

[0047] Based on this, by designing the basic reagent rack 7 and the extended reagent rack 8 to be detachably connected, the basic reagent rack 7 with three mounting holes can be selected according to the detection requirements, or the basic reagent rack 7 can be expanded into a reagent rack with four mounting holes by matching the extended reagent rack 8, which meets the storage requirements of three-component or four-component reagents in the detection process, and has the technical advantages of easy installation, strong versatility and low cost. Another convenience is that in production and manufacturing, only the basic reagent rack 7 with three mounting holes and the extended reagent rack 8 with a single mounting hole need to be produced, which can reduce costs and simplify production steps. At the same time, the design of the tray 2 can be compatible with the reagent rack of three-component reagents and the reagent rack of four-component reagents, and the requirements for the storage of three-component or four-component reagents can be met at the same time, so that the project detection of different detection requirements can be met, and it has the advantages of strong practicality and high compactness.

[0048] In this embodiment, the extended reagent rack 8 is located on one side of the basic reagent rack 7 in the width direction. Preferably, the extended reagent rack 8 is arranged in the middle of one side of the basic reagent rack 7 in the width direction, corresponding to the middle position of the three basic installation holes 7a.

[0049] Further, such as Figure 6 and 7 As shown, a hanging portion 71 is provided on one side of the width direction of the basic reagent rack 7, and a hanging buckle 81 adapted to the hanging portion 71 is provided on the side of the extended reagent rack 8, so as to facilitate the detachable installation of the extended reagent rack 8 on one side of the basic reagent rack 7. The hanging portion 71 is located between two adjacent basic installation holes 7a, which can ensure the integrity of the accommodation space of each basic installation hole 7a.

[0050] Please refer to Figure 8 The hanging part 71 includes a hanging hole 711 located at the upper part of the basic reagent rack 7, and a positioning hole 712 is provided on the side wall of the hanging hole 711 close to the outside. Fig. 9It can be seen that a locking tongue 811 is provided at the lower end of the hanging buckle 81. When the hanging buckle 81 is inserted downward into the hanging hole 711, the locking tongue 811 at the end of the hanging buckle 81 can be buckled into the positioning hole 712. At this time, the upper surface of the extended reagent rack 8 is flush with the upper surface of the basic reagent rack 7. Such a design can effectively prevent the extended reagent rack 8 from falling off.

[0051] In order to further enhance the reliability of the connection between the extended reagent rack 8 and the basic reagent rack 7, Figure 8 and 9 The lower part of the basic reagent rack 7 docking the extended reagent rack 8 is provided with a snap-in hole 72, and the lower part of the extended reagent rack 8 is provided with a snap-in 82 matching the snap-in hole 72. In this way, both the upper and lower ends of the extended reagent rack 8 can be fixedly connected with the basic reagent rack 7.

[0052] Furthermore, Fig.11 As shown, the tray 2 is a circular tray, and the positioning structure includes first mounting grooves 2a distributed along the circumference array, and the first mounting grooves 2a are used to vertically place the basic reagent rack 7, so that the centers of the three basic mounting holes 7a on the same basic reagent rack 7 are located on the same radius. A second mounting groove 2b is provided between two adjacent first mounting grooves 2a, and the second mounting groove 2b is used to place the extended reagent rack 8 attached to the side of the basic reagent rack 7. With such a design, referring to Fig.12 and Fig.13 Whether the test project requires a three-component reagent or a four-component reagent, the tray 2 is compatible.

[0053] Please refer to Fig.11 , the space surrounded by the inner sides of the two adjacent first mounting grooves 2a is a fan-shaped structure, and the second mounting groove 2b is preferably located in the middle of the fan-shaped structure. Designed in this way, the compactness of the structure can be improved and the space utilization rate can be increased. Another convenience is that the expansion reagent rack 8 is designed in the middle of one side of the width direction of the basic reagent rack 7, and after the expansion reagent rack 8 is installed on the basic reagent rack 7, the upper surfaces of the two reagent racks are flush. The advantage of such a design is that when the reagent structure on the layout tray 2 is not required to expand the diameter of the tray 2, the expansion reagent rack 8 can be compatible, and at the same time, the height of the overall structure will not be increased, which is conducive to the compact and miniaturized design of the product.

[0054] Further, refer to Fig.11, a third mounting groove 2c is also provided in the fan-shaped space surrounded by two adjacent first mounting grooves 2a, and the third mounting groove 2c is located outside the second mounting groove 2b, and is used to place the liquid consumable bottle b. When the liquid consumable bottle b and the basic reagent rack 7 with the extended reagent rack 8 are placed on the tray 2, the center lines of the reagent bottles inside each basic reagent rack 7 are located on the same circumference, the reagent bottles in the middle of each basic reagent rack 7 and the reagent bottles on each extended reagent rack 8 are located on the same circumference, and the reagent bottles outside each basic reagent rack 7 and each liquid consumable bottle b are located on the same circumference. With such a layout, consumable stations are added, and more reagent bottles can be installed on the tray 2 as much as possible, which improves the space utilization rate and makes the structural layout more reasonable and compact.

[0055] like Figure 3 As shown, a rotating shaft 9 is provided at the bottom of the tray 2 for rotating with the reagent chamber 1. In this embodiment, the driving mechanism 3 includes a motor 31 fixed at the bottom of the reagent chamber 1, and the output shaft 32 of the motor 31 is coaxially fixed to the lower end of the rotating shaft 9. The motor 31 drives the output shaft 32 to rotate, which can drive the rotating shaft 9 to drive the tray 2 to rotate.

[0056] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make a variety of similar expressions without violating the purpose and claims of the present invention, and such changes fall within the scope of protection of the present invention.

Claims

1. A reagent system for cold source side supply, characterized in that: It comprises a reagent chamber (1), a refrigeration module (B) and a driving mechanism (3); a tray (2) for storing reagents is rotatably mounted in the reagent chamber (1); and the driving mechanism (3) is used to drive the tray (2) to rotate; The reagent chamber (1) is provided with an assembly notch (1a) on its side, and the refrigeration module (B) comprises a semiconductor refrigeration element (4) and a cold circulation fan (6), wherein the semiconductor refrigeration element (4) has a hot side (4a) and a cold side (4b), the semiconductor refrigeration element (4) is installed at the assembly notch (1a), and the cold side (4b) is located inside the reagent chamber (1), and the hot side (4a) is located outside the reagent chamber (1), and the cold circulation fan (6) is installed on the cold side (4b).

2. The reagent system for cold source side supply according to claim 1, characterized in that: The refrigeration module (B) further comprises a module housing (B1) mounted on the outside of the assembly notch (1a), the module housing (B1) having a through heat dissipation channel (a), the hot side (4a) of the semiconductor refrigeration element (4) being located in the heat dissipation channel (a), and a heat dissipation fan (B2) being provided at one end of the heat dissipation channel (a).

3. The reagent system for cold source side supply according to claim 1, characterized in that: The cold side (4b) of the semiconductor refrigeration element (4) is fixedly provided with cold end fins (5) distributed in an array, and the cold circulation fan (6) is arranged at the outer end of the cold end fins (5).

4. The reagent system for cold source side supply according to claim 3, characterized in that: Each of the cold end fins (5) is provided with notches (5a) in an array.

5. The reagent system for cold source side supply according to claim 1, characterized in that: The hot side (4a) of the semiconductor refrigeration element (4) is equipped with a hot end fin (4a1), and the hot end fin (4a1) is located in the heat dissipation channel (a); each of the hot end fins (4a1) is arranged in an array along the vertical direction so that the air in the heat dissipation channel (a) can pass through the gaps between each of the hot end fins (4a1).

6. The reagent system for cold source side supply according to claim 1, characterized in that: A heat-insulating layer (1b) is provided on the side wall of the reagent chamber (1).

7. The reagent system for cold source side supply according to claim 1, characterized in that: The tray (2) is provided with a locking structure distributed along the circumference, and a reagent rack assembly (A) is detachably placed on the locking structure; The reagent rack assembly (A) comprises a basic reagent rack (7), the basic reagent rack (7) being provided with three basic mounting holes (7a) distributed in a linear direction, each of the basic mounting holes (7a) extending in a height direction of the basic reagent rack (7), an extended reagent rack (8) being detachably mounted on one side of the basic reagent rack (7), the extended reagent rack (8) being provided with an extended mounting hole (8a) extending in a height direction, the extended mounting hole (8a) and the three basic mounting holes (7a) being used for placing reagent bottles.

8. The reagent system for cold source side supply according to claim 7, characterized in that: The extended reagent rack (8) is located on one side of the basic reagent rack (7) in the width direction and corresponds to the middle position of the three basic installation holes (7a).

9. The reagent system for cold source side supply according to claim 7, characterized in that: The tray (2) is a circular tray, and the positioning structure comprises first mounting grooves (2a) distributed in a circumferential array, the first mounting grooves (2a) being used to mount the basic reagent rack (7), and a second mounting groove (2b) being provided between two adjacent first mounting grooves (2a), and the second mounting groove (2b) being used to mount the extended reagent rack (8).

10. The reagent system for cold source side supply according to claim 1, characterized in that: A rotating shaft (9) rotatably matched with the reagent chamber (1) is provided at the bottom of the tray (2); the driving mechanism (3) comprises a motor (31) fixed at the bottom of the reagent chamber (1); an output shaft (32) of the motor (31) is coaxially fixed to the lower end of the rotating shaft (9).

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