Biochemical analyzer

Abstract

The utility model provides a biochemical analyzer. The first cleaning needle, the first liquid extraction needle, the first drying needle, the second cleaning needle, the second liquid extraction needle and the second drying needle are all arranged on the fixing frame; the first drying needle can dry the reaction cups of the first cup groove group, the first liquid pumping needle can pump waste liquid of the reaction cups of the first cup groove group, the first cleaning needle can pump the waste liquid of the reaction cups of the first cup groove group and inject cleaning liquid into the reaction cups of the first cup groove group, and the second drying needle can dry the reaction cups of the second cup groove group; the first liquid extraction needle can extract the reaction cup waste liquid of the first cup groove group, the second liquid extraction needle can extract the reaction cup waste liquid of the second cup groove group, and the second cleaning needle can extract the reaction cup waste liquid of the second cup groove group and inject the cleaning liquid into the reaction cups of the second cup groove group, compared with an existing biochemical analyzer, due to the fact that one independent mechanical structure is omitted, the biochemical analyzer is simpler in structure.

Description

Technical Field

[0001] The utility model relates to the field of biochemical analysis equipment, in particular to a biochemical analyzer. Background Art

[0002] A biochemical analyzer is one of the most important analytical instruments frequently used in clinical testing. It analyzes blood or other body fluids to measure various biochemical indicators, such as transaminases, hemoglobin, albumin, total protein, cholesterol, creatinine, glucose, inorganic phosphorus, amylase, and calcium. Combined with other clinical data, comprehensive analysis can help diagnose diseases, evaluate organ function, identify complications, and determine the basis for future treatment.

[0003] An existing biochemical analyzer includes a cleaning system, which includes at least one cleaning unit, at least one suction unit, and at least one wiping unit. The wiping unit and the suction unit are independently arranged, and the suction unit is used to suck the liquid remaining in the reaction container after cleaning by the cleaning unit, and the wiping unit is used to simultaneously suck and wipe the liquid remaining in the reaction container after the suction unit has sucked the liquid. The wiping unit includes a liquid suction component for sucking the liquid and a wiping head provided on the liquid suction component for wiping the liquid. Therefore, during operation, the suction unit first sucks the liquid from the reaction container, and then the wiping unit, which is independent of the suction unit, sucks the liquid and wipes the emptied reaction container simultaneously. In this way, the amount of residual liquid in the reaction container can be greatly reduced.

[0004] However, since the suction part of the existing biochemical analyzer belongs to a separate set of mechanical structures, the structure of the existing biochemical analyzer is complicated. Therefore, a biochemical analyzer with a simple structure is urgently needed. Utility Model Content

[0005] In view of this, an embodiment of the present invention provides a biochemical analyzer.

[0006] A biochemical analyzer comprises: an incubation substrate, an incubation tray, a rotation drive device and a cleaning system;

[0007] The incubation tray is rotatably mounted on the incubation base plate, and is provided with a first cup slot group and a second cup slot group, wherein the first cup slot group includes a plurality of cup positions distributed along a first circumferential direction for placing reaction cups, and the second cup slot group includes a plurality of cup positions distributed along a second circumferential direction for placing reaction cups;

[0008] The rotary drive device is connected to the incubation tray in a transmission manner, and is used to drive the incubation tray to rotate;

[0009] The cleaning system is arranged on one side of the incubation substrate;

[0010] The cleaning system includes a cleaning head, a fixing frame and a lifting mechanism for driving the fixing frame to move up and down;

[0011] The cleaning head is arranged on the fixing frame;

[0012] The cleaning head comprises a first cleaning needle group and a second cleaning needle group;

[0013] The first cleaning needle group comprises a first drying needle for drying the reaction cups of the first cup groove group, a first liquid pumping needle for pumping the waste liquid of the reaction cups of the first cup groove group, and a plurality of first cleaning needles for pumping the waste liquid of the reaction cups of the first cup groove group and injecting the cleaning liquid into the reaction cups of the first cup groove group;

[0014] The plurality of first cleaning needles, the first liquid pumping needle and the first drying needle are arranged in sequence along a first circumferential direction;

[0015] The second cleaning needle group comprises a second drying needle for drying the reaction cups of the second cup groove group, a second liquid pumping needle for pumping the waste liquid of the reaction cups of the second cup groove group, and a plurality of second cleaning needles for pumping the waste liquid of the reaction cups of the second cup groove group and injecting the cleaning liquid into the reaction cups of the second cup groove group;

[0016] The plurality of second cleaning needles, the second liquid pumping needle and the second drying needle are arranged in sequence along a second circumferential direction.

[0017] Preferably, the first cleaning needle comprises a first sub-liquid pumping needle for pumping the waste liquid and a first liquid injection needle for injecting the cleaning liquid;

[0018] The liquid outlet end of the first liquid injection needle is higher than the liquid inlet of the second liquid pumping needle.

[0019] Preferably, the second cleaning needle comprises a second sub-liquid pumping needle for pumping the waste liquid and a second liquid injection needle for injecting the cleaning liquid;

[0020] The liquid outlet end of the second liquid injection needle is higher than the liquid inlet of the second sub-liquid pumping needle.

[0021] Preferably, the head of the first drying needle and the head of the second drying needle are provided with a drying rod.

[0022] Preferably, the lifting mechanism comprises a driving mechanism, a screw rod, a guide rail and a sliding block;

[0023] The guide rail is vertically arranged on one side of the driving mechanism;

[0024] The screw rod is vertically arranged and in transmission connection with the driving mechanism;

[0025] The sliding block is slidingly arranged on the guide rail and is provided with a screw hole in thread cooperation with the screw rod;

[0026] The fixing frame is arranged on the sliding block.

[0027] Preferably, the fixing frame comprises a vertical part, a horizontal part, a first mounting plate and a second mounting plate;

[0028] The lower end of the vertical part is connected with the sliding block;

[0029] One end of the horizontal part is detachably connected with the upper end of the vertical part;

[0030] One side of the first mounting plate is fixed to the horizontal part through the first adjusting screw, and the first mounting plate is used for mounting a plurality of first cleaning needles, first liquid pumping needles and first drying needles;

[0031] The second mounting plate is fixed to the other side of the first mounting plate through the second adjusting screw, and the second mounting plate is used for mounting a plurality of second cleaning needles, second liquid pumping needles and second drying needles.

[0032] Preferably, the top of the vertical part is provided with a positioning pin;

[0033] The horizontal part is provided with a positioning hole matched with the positioning pin.

[0034] Preferably, the first cleaning needles, the first liquid pumping needles and the first drying needles are movably arranged in the fixing frame through springs;

[0035] The lower end of the first liquid pumping needle is higher than the lower end of the first drying needle;

[0036] The lower end of the first cleaning needle away from the first drying needle is at the same height as the lower end of the first drying needle, and the lower end of the remaining first cleaning needle is at the same height as the lower end of the first liquid pumping needle.

[0037] Preferably, the first cup groove group and the second cup groove group are each provided with 204 cup positions;

[0038] The number of the first cleaning needles and the second cleaning needles is 6.

[0039] Preferably, the incubation disc further comprises a light measuring channel arranged on the incubation disc.

[0040] The biochemical analyzer provided by the utility model has the incubation disc rotatably arranged on the incubation base plate, the incubation disc is provided with the first cup groove group and the second cup groove group, the rotary driving device is in transmission connection with the incubation disc, the cleaning system is arranged on one side of the incubation base plate, the cleaning head is arranged on the fixing frame, and the plurality of first cleaning needles, the first liquid suction needle and the first drying needle are sequentially arranged along the first circumferential direction, the plurality of second cleaning needles, the second liquid suction needle and the second drying needle are sequentially arranged along the second circumferential direction. Through the disclosed biochemical analyzer, the first cleaning needle, the first liquid suction needle, the first drying needle, the second cleaning needle, the second liquid suction needle and the second drying needle of the utility model are all arranged on the fixing frame, the first drying needle can dry the reaction cup of the first cup groove group, the first liquid suction needle can suck the waste liquid of the reaction cup of the first cup groove group, the first cleaning needle can suck the waste liquid of the reaction cup of the first cup groove group and inject the cleaning liquid into the reaction cup of the first cup groove group, the second drying needle can dry the reaction cup of the second cup groove group, the second liquid suction needle can suck the waste liquid of the reaction cup of the second cup groove group, and the second cleaning needle can suck the waste liquid of the reaction cup of the second cup groove group and inject the cleaning liquid into the reaction cup of the second cup groove group. Compared with the existing biochemical analyzer, the utility model reduces a set of independent mechanical structure, and therefore, the structure of the biochemical analyzer of the utility model is simpler. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to the provided drawings without creative labor.

[0042] Figure 1 The structure schematic diagram of the biochemical analyzer provided by the utility model embodiment is shown in the figure.

[0043] Figure 2 The structure schematic diagram of the cleaning system provided by the utility model embodiment is shown in the figure.

[0044] Figure 3 The structure schematic diagram of the first cleaning needle group provided by the utility model embodiment is shown in the figure.

[0045] Figure 4 The front view of the first cleaning needle group provided by the utility model embodiment is shown in the figure.

[0046] Figure 5 The structure schematic diagram of the first cleaning needle provided by the utility model embodiment is shown in the figure.

[0047] Figure 6 The structure schematic diagram of the first liquid suction needle provided by the utility model embodiment is shown in the figure.

[0048] Figure 7 A structure schematic view of the first drying needle is provided for the embodiment of the utility model.

[0049] Figure 8 A rotation schematic view of the incubation tray is provided for the embodiment of the utility model.

[0050] The incubation base plate 1, the incubation tray 2, the rotary drive device 3, the cleaning head 41, the fixing frame 42, the vertical part 421, the horizontal part 422, the first mounting plate 423, the second mounting plate 424, the positioning pin 425, the hand screw 426, the first adjusting screw 427, the second adjusting screw 428, the lifting mechanism 43, the driving mechanism 431, the screw rod 432, the guide rail 433, the sliding block 434, and the light measurement channel 5 are included.

[0051] The cleaning head 41 includes the first cleaning needle group 411, the first drying needle 4111, the first liquid suction needle 4112, the first cleaning needle 4113, the first sub liquid suction needle 4114, the first liquid injection needle 4115, the drying rod 4113, and the second cleaning needle group 412. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0053] The utility model embodiment provides a biochemical analyzer, see Figures 1 to 8 , Figure 1 It is the structure schematic view of biochemical analyzer, and biochemical analyzer includes: incubation base plate 1, incubation tray 2, rotary drive device 3 and cleaning system;

[0054] Incubation tray 2 can be rotatably arranged on incubation base plate 1, and incubation tray 2 is provided with first cup groove group and second cup groove group, first cup groove group includes multiple cup sites for placing reaction cup along first circumferential direction, and second cup groove group includes multiple cup sites for placing reaction cup along second circumferential direction;

[0055] Rotary drive device 3 is in transmission connection with incubation tray 2, and rotary drive device 3 is used to drive incubation tray 2 to rotate;

[0056] Cleaning system is arranged on one side of incubation base plate 1;

[0057] Cleaning system includes cleaning head 41, fixing frame 42 and lifting mechanism 43 for driving fixing frame 42 to lift;

[0058] Cleaning head 41 is arranged on fixing frame 42.

[0059] The cleaning head 41 comprises a first cleaning needle group 411 and a second cleaning needle group 412;

[0060] The first cleaning needle group 411 comprises a first drying needle 4111 for drying the reaction cups of the first cup groove group, a first pumping needle 4112 for pumping the waste liquid of the reaction cups of the first cup groove group, and a plurality of first cleaning needles 4113 for pumping the waste liquid of the reaction cups of the first cup groove group and injecting cleaning liquid into the reaction cups of the first cup groove group;

[0061] The plurality of first cleaning needles 4113, the first pumping needle 4112 and the first drying needle 4111 are sequentially arranged along a first circumferential direction;

[0062] The second cleaning needle group 412 comprises a second drying needle for drying the reaction cups of the second cup groove group, a second pumping needle for pumping the waste liquid of the reaction cups of the second cup groove group, and a plurality of second cleaning needles for pumping the waste liquid of the reaction cups of the second cup groove group and injecting cleaning liquid into the reaction cups of the second cup groove group;

[0063] The plurality of second cleaning needles, the second pumping needle and the second drying needle are sequentially arranged along a second circumferential direction.

[0064] It should be noted that when the rotation driving device 3 drives the incubation disc 2 to rotate, the reaction cups can be cleaned according to the pre-set program steps and through the cooperation with the lifting mechanism 43.

[0065] The utility model discloses an incubation disc 2 can be rotatably arranged on the incubation base plate 1, and the incubation disc 2 is equipped with the first cup groove group and the second cup groove group, the rotary drive device 3 is transmission connection with the incubation disc 2, the cleaning system is arranged on the one side of the incubation base plate 1, and the cleaning head 41 is arranged on the fixed frame 42, and a plurality of first cleaning needles 4113, first liquid pumping needles 4112 and first drying needles 4111 are sequentially arranged along the first circumferential direction, and a plurality of second cleaning needles, second liquid pumping needles and second drying needles are sequentially arranged along the second circumferential direction. Through the biochemical analyzer disclosed above, since the first cleaning needle 4113, the first liquid pumping needle 4112, the first drying needle 4111, the second cleaning needle, the second liquid pumping needle and the second drying needle of the application are all arranged on the fixed frame 42, and the first drying needle 4111 can dry the reaction cup of the first cup groove group, the first liquid pumping needle 4112 can pump the waste liquid of the reaction cup of the first cup groove group, the first cleaning needle 4113 can pump the waste liquid of the reaction cup of the first cup groove group and inject the cleaning liquid into the reaction cup of the first cup groove group, the second drying needle can dry the reaction cup of the second cup groove group, the second liquid pumping needle can pump the waste liquid of the reaction cup of the second cup groove group, and the second cleaning needle can pump the waste liquid of the reaction cup of the second cup groove group and inject the cleaning liquid into the reaction cup of the second cup groove group, compared with the existing biochemical analyzer, since one set of independent mechanical structure is reduced, therefore, the structure of the biochemical analyzer of the application is simpler.

[0066] Preferably, the rotary drive device 3 is a motor.

[0067] Specifically, the first cleaning needle 4113 comprises: a first sub-liquid pumping needle for pumping waste liquid and a first liquid injection needle 4115 for injecting cleaning liquid.

[0068] The liquid outlet end of the first liquid injection needle 4115 is higher than the liquid inlet of the first sub-liquid pumping needle 4114.

[0069] It should be noted that the liquid outlet end of the first liquid injection needle 4115 is higher than the liquid inlet of the first sub-liquid pumping needle 4114, when the lifting mechanism 43 drives the first cleaning needle 4113 to descend to the bottom of the reaction cup, the liquid inlet of the first sub-liquid pumping needle 4114 can be in contact with the bottom of the reaction cup, thereby the first sub-liquid pumping needle 4114 can pump all the liquid in the reaction cup, effectively reducing the residue in the reaction cup.

[0070] Specifically, the second cleaning needle comprises: a second sub-liquid needle for pumping waste liquid and a second liquid injection needle for injecting cleaning liquid.

[0071] The liquid outlet end of the second liquid injection needle is higher than the liquid inlet of the second sub-liquid pumping needle.

[0072] It should be noted that the liquid outlet end of the second liquid injection needle is higher than the liquid inlet of the second sub-liquid suction needle. When the lifting mechanism 43 drives the second cleaning needle to descend to the bottom of the reaction cup, the liquid inlet of the second sub-liquid suction needle can be in contact with the bottom of the reaction cup, and then the second sub-liquid suction needle can completely suck the liquid in the reaction cup, thereby effectively reducing the residue in the reaction cup.

[0073] Further, the head of the first drying needle 4111 and the head of the second drying needle are provided with a drying rod 4113.

[0074] It should be noted that by providing the drying rod 4113 on the head of the first drying needle 4111 and the head of the second drying needle, the space in the reaction cup can be compressed after the drying rod 4113 enters the reaction cup, forming a high negative pressure during liquid suction, and further sucking the residual liquid in the reaction cup.

[0075] Further, the lifting mechanism 43 comprises a driving mechanism 431, a screw rod 432, a guide rail 433 and a sliding block 434.

[0076] The guide rail 433 is vertically arranged on one side of the driving mechanism 431.

[0077] The screw rod 432 is vertically arranged and in transmission connection with the driving mechanism 431.

[0078] The sliding block 434 is slidingly arranged on the guide rail 433 and is provided with a screw hole in thread cooperation with the screw rod 432.

[0079] The fixing frame 42 is arranged on the sliding block 434.

[0080] It should be noted that the guide rail 433 is vertically arranged on one side of the driving mechanism 431, the screw rod 432 is vertically arranged and in transmission connection with the driving mechanism 431, the sliding block 434 is slidingly arranged on the guide rail 433 and is provided with a screw hole in thread cooperation with the screw rod 432, and the fixing frame 42 is arranged on the sliding block 434. Therefore, when the driving mechanism 431 drives the screw rod 432 to rotate, the sliding block 434 can move up and down along the screw rod 432 through thread cooperation with the screw rod 432, and the fixing frame 42 is arranged on the sliding block 434. Therefore, the driving mechanism 431 can realize the lifting of the fixing frame 42 through cooperation of the screw rod 432 and the sliding block 434.

[0081] It should be further noted that the lifting mechanism 43 can be realized by the driving mechanism 431, the screw rod 432, the guide rail 433 and the sliding block 434, or by a gas cylinder or an electric push rod. Those skilled in the art can make routine replacements according to needs.

[0082] Preferably, the driving mechanism 431 is an electric motor.

[0083] Specifically, the fixing frame 42 comprises a vertical part 421, a horizontal part 422, a first mounting plate 423 and a second mounting plate 424.

[0084] The lower end of the vertical part 421 is connected with the sliding block 434.

[0085] One end of the horizontal part 422 is detachably connected with the upper end of the vertical part 421.

[0086] One side of the first mounting plate 423 is fixed to the horizontal part 422 through the first adjusting screw 427, and the first mounting plate 423 is used for mounting a plurality of first cleaning needles 4113, a first liquid pumping needle 4112 and a first drying needle 4111.

[0087] The second mounting plate 424 is fixed to the other side of the first mounting plate 423 through the second adjusting screw 428, and the second mounting plate 424 is used for mounting a plurality of second cleaning needles, a second liquid pumping needle and a second drying needle.

[0088] It should be noted that one side of the first mounting plate 423 is fixed to the horizontal part 422 through the first adjusting screw 427, so as to facilitate the staff to adjust the position of the first mounting plate 423, so that the plurality of first cleaning needles 4113, the first liquid pumping needle 4112 and the first drying needle 4111 can be aligned and inserted into the corresponding reaction cup under the driving of the lifting mechanism 43.

[0089] The second mounting plate 424 is fixed to the other side of the first mounting plate 423 through the second adjusting screw 428, so as to facilitate the staff to adjust the position of the second mounting plate 424, so that the plurality of second cleaning needles, the second liquid pumping needle and the second drying needle can be aligned and inserted into the corresponding reaction cup under the driving of the lifting mechanism 43.

[0090] Preferably, the horizontal part 422 is fixed with the vertical part 421 through the hand screw 426.

[0091] Specifically, the top of the vertical part 421 is provided with a positioning pin 425.

[0092] The horizontal part 422 is provided with a positioning hole matched with the positioning pin 425.

[0093] It should be noted that the positioning pin 425 is arranged at the top of the vertical part 421, and the positioning hole matched with the positioning pin 425 is arranged in the horizontal part 422, so as to facilitate the staff to assemble the horizontal part 422 and the vertical part 421, and the assembly efficiency can be effectively improved.

[0094] Further, the first cleaning needle 4113, the first liquid pumping needle 4112 and the first drying needle 4111 are movably arranged in the fixing frame 42 through the spring.

[0095] The height of the lower end of the first liquid pumping needle 4112 is higher than the height of the lower end of the first drying needle 4111.

[0096] The lower end of the first cleaning needle 4113 away from the first drying needle 4111 has the same height as the lower end of the first drying needle 4111, and the lower end of the remaining first cleaning needle 4113 has the same height as the lower end of the first liquid suction needle 4112.

[0097] It should be noted that the first drying needle 4111 and the first cleaning needle 4113 away from the first drying needle 4111 can first contact the bottom of the reaction cup when they are lowered, and when the first drying needle 4111 and the first cleaning needle 4113 away from the first drying needle 4111 contact the bottom of the reaction cup, the remaining first cleaning needle 4113 and the first liquid suction needle 4112 will contact the bottom of the reaction cup as the first cleaning needle group 411 is lowered. Therefore, the lifting mechanism 43 can be stopped when the remaining first cleaning needle 4113 and the first liquid suction needle 4112 are about to contact the bottom of the reaction cup or have just contacted the bottom of the reaction cup, effectively avoiding the collision between the remaining first cleaning needle 4113 and the first liquid suction needle 4112 and the reaction cup.

[0098] Preferably, the plurality of second cleaning needles, the second liquid suction needle, and the second drying needle in the second cleaning needle group 412 are arranged in the same manner as the plurality of first cleaning needles 4113, the first liquid suction needle 4112, and the first drying needle 4111 in the first cleaning needle group 411. For details, refer to the arrangement of the plurality of first cleaning needles 4113, the first liquid suction needle 4112, and the first drying needle 4111 in the first cleaning needle group 411, which will not be described here.

[0099] Specifically, the first cup slot group and the second cup slot group each have 204 cup positions.

[0100] The number of first cleaning needles 4113 and second cleaning needles is 6.

[0101] It should be noted that the first cup slot group and the second cup slot group can each have 204 cup positions, or can have other different numbers of cup positions, which can be selected by those skilled in the art according to needs.

[0102] The number of first cleaning needles 4113 and second cleaning needles can be set to 6, or can be set to other different numbers, which can be selected by those skilled in the art according to needs.

[0103] In order to facilitate understanding of the above-mentioned scheme, the following structure Figures 4 to 8 will be further introduced.

[0104] Reference Figure 3 The six first cleaning needles 4113, the first liquid suction needle 4112, and the first drying needle 4111 are sequentially numbered as first needle, second needle, third needle, fourth needle, fifth needle, sixth needle, seventh needle, and eighth needle.

[0105] The 204 cup positions are set to 5 rotation cycles, and the number of cup positions each time is 41, that is, the rotary drive device 3 drives the incubation tray 2 to rotate 5 times to complete one circle. Before the rotation, the first needle is located above the first cup position in the first cycle, and after the rotation 5 times, the first needle is located above the second cup position in the first cycle.

[0106] Based on the specific example provided above, the cleaning logic of the reaction cup is provided below.

[0107] After the test is completed, the reaction cup needs to be cleaned in 8 steps before the next test can be carried out urgently.

[0108] The present application can effectively reduce the contamination carried over from the reaction cup through the following steps: purified water washing → alkaline solution washing → acid solution washing → purified water washing → purified water washing → purified water washing → liquid extraction → residual liquid extraction.

[0109] Refer to Table 1 below. During the 6-step cleaning, the incubation tray 2 rotates to perform a water blank test on the cup in preparation for the next test.

[0110]

[0111] Table 1

[0112] Furthermore, the biochemical analyzer further includes: a light measuring channel 5 arranged on the incubation tray 2 .

[0113] It should be noted that by setting up the photometric channel 5, it is possible to simultaneously detect a single-circle circular cuvette, or separately detect a double-circle circular cuvette, and to detect whether the rotation speed of the cuvette is reasonable, and to provide feedback and error reporting when the cuvette rotates abnormally.

[0114] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A biochemical analyzer, characterized in that include: Incubation substrate, incubation tray, rotation drive device and cleaning system; The incubation tray is rotatably mounted on the incubation base plate, and is provided with a first cup slot group and a second cup slot group, wherein the first cup slot group includes a plurality of cup positions distributed along a first circumferential direction for placing reaction cups, and the second cup slot group includes a plurality of cup positions distributed along a second circumferential direction for placing reaction cups; The rotary drive device is in transmission connection with the incubation tray, and the rotary drive device is used to drive the incubation tray to rotate; The cleaning system is arranged on one side of the incubation substrate; The cleaning system includes a cleaning head, a fixing frame, and a lifting mechanism for driving the fixing frame to rise and fall; The cleaning head is arranged on the fixing frame; The cleaning head includes a first cleaning needle group and a second cleaning needle group; The first cleaning needle group includes a first drying needle for drying the cuvettes of the first cup tank group, a first liquid extraction needle for extracting waste liquid from the cuvettes of the first cup tank group, and a plurality of first cleaning needles, wherein the first cleaning needle is used to extract waste liquid from the cuvettes of the first cup tank group and inject cleaning liquid into the cuvettes of the first cup tank group; A plurality of the first cleaning needles, the first liquid extraction needles and the first drying needles are sequentially arranged along the first circumferential direction; The second cleaning needle group includes a second drying needle for drying the cuvettes of the second cup tank group, a second liquid extraction needle for extracting waste liquid from the cuvettes of the second cup tank group, and a plurality of second cleaning needles, wherein the second cleaning needle is used to extract waste liquid from the cuvettes of the second cup tank group and inject cleaning liquid into the cuvettes of the second cup tank group; A plurality of the second cleaning needles, the second liquid extraction needles and the second drying needles are sequentially arranged along the second circumferential direction.

2. The biochemical analyzer according to claim 1, characterized in that The first cleaning needle includes: a first sub-liquid extraction needle for extracting waste liquid and a first liquid injection needle for injecting cleaning liquid; The liquid outlet end of the first liquid injection needle is higher than the liquid inlet end of the first sub-liquid withdrawal needle.

3. The biochemical analyzer according to claim 2, characterized in that The second cleaning needle includes: a second sub-liquid extraction needle for extracting waste liquid and a second liquid injection needle for injecting cleaning liquid; The liquid outlet end of the second liquid injection needle is higher than the liquid inlet end of the second sub-liquid withdrawal needle.

4. The biochemical analyzer according to claim 1, characterized in that A drying rod is provided at the head of the first drying needle and the head of the second drying needle.

5. The biochemical analyzer according to claim 1, characterized in that The lifting mechanism includes: a driving mechanism, a screw, a guide rail and a slider; The guide rail is vertically arranged on one side of the driving mechanism; The screw is vertically arranged and is transmission-connected to the driving mechanism; The slider is slidably arranged on the guide rail and is provided with a screw hole matched with the screw thread; The fixing frame is arranged on the sliding block.

6. The biochemical analyzer according to claim 5, characterized in that The fixing frame includes: a vertical portion, a horizontal portion, a first mounting plate and a second mounting plate; The lower end of the vertical portion is connected to the slider; One end of the horizontal portion is detachably connected to the upper end of the vertical portion; One side of the first mounting plate is fixed to the transverse portion by a first adjusting screw, and the first mounting plate is used to mount a plurality of the first cleaning needles, the first liquid extraction needles, and the first drying needles; The second mounting plate is fixed to the other side of the first mounting plate by a second adjusting screw. The second mounting plate is used to mount a plurality of the second cleaning needles, the second liquid extraction needles and the second drying needles.

7. The biochemical analyzer according to claim 6, characterized in that A positioning pin is provided on the top of the vertical portion; The transverse portion is provided with a positioning hole matched with the positioning pin.

8. The biochemical analyzer according to claim 1, characterized in that The first cleaning needle, the first liquid extraction needle and the first drying needle are all movably arranged on the fixing frame via a spring; The height of the lower end of the first liquid extraction needle is higher than the height of the lower end of the first drying needle; The lower end of the first cleaning needle away from the first drying needle has the same height as the lower end of the first drying needle, and the lower ends of the remaining first cleaning needles have the same height as the lower end of the first liquid extraction needle.

9. The biochemical analyzer according to claim 1, characterized in that The first cup slot group and the second cup slot group are each provided with 204 cup positions; The number of the first cleaning needles and the second cleaning needles is 6.

10. The biochemical analyzer according to claim 1, characterized in that Also includes: A light measuring channel is provided on the incubation plate.

Images