CN209946162U - Biochemical analyzer - Google Patents

Abstract

The utility model discloses a biochemical analyzer, which comprises a workbench; the reaction disc is rotatably arranged on the workbench, and a plurality of transparent reaction cups are circumferentially distributed on the reaction disc; the reagent disk is positioned on one side of the reaction disk, and a plurality of reaction kits are circumferentially distributed on the reagent disk; the feeding mechanism and the discharging mechanism are positioned at the front end of the workbench and can reciprocate back and forth to convey the test tube rack; the extracting station is positioned between the feeding mechanism and the discharging mechanism; the stepping movement mechanism drives the test tube rack to move in a stepping manner towards one side of the discharge mechanism and enables all test tubes on the test tube rack to sequentially pass through the extraction station; the first liquid taking mechanism is used for extracting the sample liquid in the test tube on the extraction station and conveying the sample liquid to one of the reaction cups; the second liquid taking mechanism extracts the reaction liquid in one reaction reagent box and conveys the reaction liquid to a corresponding reaction cup; and the photoelectric detection mechanism is used for detecting the data information of the sample liquid after the reaction liquid is added. The biochemical analyzer realizes the function of full-automatic detection, and improves the detection efficiency and the accuracy.

Description

Biochemical analyzer

Technical Field

The utility model relates to a biochemical analysis technical field, in particular to biochemical analyzer.

Background

In the field of medical detection, test samples such as blood, urine and the like are often required to be extracted from a human body for detection, most of the traditional detection methods are manually operated for detection, and the waiting time is too long and the detection efficiency is low due to the fact that the number of the detected samples is large; moreover, the operator repeating the same work for a long time can easily cause work fatigue, resulting in an increased error rate, thereby affecting the diagnosis of the patient with serious consequences.

For this reason, simple detection devices are currently on the market, which have the following drawbacks:

1. these simple and easy detection device only detect the part, do not have the conveyor who is applicable to the feeding and the ejection of compact of test tube, degree of automation is low, influences efficiency of software testing. 2. The sample liquid after the test is finished is discharged through a pipeline without the function of cleaning the reaction cup, and the residual sample liquid in the reaction cup can affect the measurement result of the sample liquid added again, so that the measurement result is inaccurate.

SUMMERY OF THE UTILITY MODEL

The utility model discloses lie in solving one of the technical problem that exists among the prior art at least, provide a biochemical analyzer that degree of automation is high.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:

a biochemical analyzer, comprising: a work table; the reaction disc is rotatably arranged on the workbench, and a plurality of transparent reaction cups which are circumferentially distributed around the rotation center of the reaction disc are arranged on the reaction disc; the reagent disk is rotatably arranged on the workbench and positioned on one side of the reaction disk, and a plurality of reaction kits distributed circumferentially around the rotation center of the reagent disk are arranged on the reagent disk; the feeding mechanism is positioned at the front end of the workbench and can reciprocate along the front and back directions of the workbench to convey the test tube rack; the discharging mechanism is positioned at the front end of the workbench and at one side of the feeding mechanism, and can reciprocate along the front-back direction of the workbench to convey the test tube rack; the extraction station is arranged on the workbench and positioned between the feeding mechanism and the discharging mechanism, and corresponds to one test tube on the test tube rack; the stepping movement mechanism is used for driving the test tube rack on one side of the feeding mechanism to move towards one side of the discharging mechanism in a stepping manner and enabling all test tubes on the test tube rack to sequentially pass through the extraction station; the first liquid taking mechanism is arranged on the workbench and used for taking the sample liquid in the test tube on the extraction station and conveying the sample liquid to one of the reaction cups; the second liquid taking mechanism is arranged on the workbench and used for taking the reaction liquid in one of the reaction reagent boxes and conveying the reaction liquid to the corresponding reaction cup; and the photoelectric detection mechanisms are positioned on two opposite sides of the reaction cup and are used for detecting the data information of the sample liquid after the reaction liquid is added.

Preferably, be equipped with the agitating unit who is used for with the sample liquid in the reaction cup and the reaction liquid mixing on the workstation, agitating unit helps intensive mixing sample liquid and reaction liquid, accelerates reaction rate, improves detection efficiency.

And an automatic cleaning device is arranged on the workbench and used for cleaning the reaction cup after detection. The reaction cup after detection is cleaned through the automatic cleaning device, and the influence on the test result of the next sample liquid caused by the residual original sample liquid is avoided.

Preferably, the automatic cleaning device includes: the first bracket is movably arranged on the workbench and positioned on one side of the reaction disc; at least one group of first pipe groups, which are arranged on the first bracket and used for injecting cleaning liquid into the reaction cups and extracting the liquid in the reaction cups, wherein each group of first pipe groups corresponds to one reaction cup; the at least one group of second pipe groups are arranged on the first support, are positioned behind the first pipe groups and are used for injecting clear water into the reaction cups and extracting liquid in the reaction cups, and each group of second pipe groups corresponds to one reaction cup; and the lifting mechanism is connected with the first support and is used for driving the first support to descend so as to enable the first tube group and the second tube group to extend downwards into the corresponding reaction cups, or driving the first support to ascend so as to enable the first tube group and the second tube group to be separated from the corresponding reaction cups. Above self-cleaning device utilizes first nest of tubes to take out the sample liquid that the test finishes, then pour into the washing liquid and wash the reaction cup, then the reaction dish rotates the station distance of a reaction cup, the second nest of tubes takes the washing liquid out, then pour into the clear water and wash the reaction cup, then take the clear water out, combine the rotation of reaction dish, can realize automatic clear function, it is clean effectual, high efficiency, avoid remaining sample liquid in the reaction cup to cause the influence to the measuring result of the sample liquid that adds once more, ensure measuring result's accuracy.

Preferably, in some embodiments of the present invention, the adjusting mechanism includes a waist-shaped hole formed on the mounting frame and a mounting hole formed on the support body, a length direction of the waist-shaped hole extends toward the reaction disk, and the threaded fastener passes through the waist-shaped hole and is screwed with the mounting hole. The adjusting mechanism is simple in structure and convenient to adjust.

Preferably, the first support is further provided with at least one third suction pipe located behind the second pipe group, the lower part of the third suction pipe located at the tail end is provided with a cleaning piece capable of contacting with the inner wall of the reaction cup, the cleaning piece can move downwards relative to the inner wall of the reaction cup to clean liquid on the inner wall of the reaction cup to the bottom of the reaction cup, and the third suction pipe extends downwards to the bottom of the reaction cup. After the clean water is cleaned, the clean water remained in the reaction cup can be removed by the cleaning piece matched with the third suction pipe, so that the sample liquid is prevented from being diluted when the sample liquid is added again, and the accuracy of a test result is ensured.

Preferably, an elastic member for driving the third pipette to abut against the bottom of the reaction cup is further connected between the third pipette and the first support. The elastic piece can ensure that the third suction pipe can be propped against the bottom of the reaction cup, and is favorable for pumping out clean water in the reaction cup.

Preferably, the cleaning part is a plastic part sleeved on the third suction pipe, the plastic part is not stained with water, a large amount of clear water can not be adhered to the surface of the plastic part, and the plastic part is installed on the third suction pipe in a sleeved mode, so that the cleaning part is convenient to detach, replace and maintain.

Preferably, the first tube group, the second tube group and the third suction tube are sequentially arranged and form an arc shape, and the first tube group, the second tube group and the third suction tube correspond to the reaction cups on the reaction tray one to one.

The first pipe group comprises a first liquid suction pipe and a first liquid discharge pipe, and the first liquid discharge pipe is used for discharging cleaning liquid; the second pipe group comprises a second liquid suction pipe and a second liquid discharge pipe, and the second liquid discharge pipe is used for discharging clean water.

Preferably, the front end of workstation is equipped with the second frame, is equipped with a horizontal direction passageway in the second frame, draw the station and set up on direction passageway, feed mechanism and discharge mechanism are located direction passageway's both ends respectively, step-by-step motion s mechanism is including rotating plectrum and the first driver of drive plectrum pivoted that sets up in the second frame, the plectrum can stir one side step-by-step motion of test-tube rack towards discharge mechanism on the direction passageway, and the distance of step-by-step motion at every turn of test-tube rack is the distance between two adjacent test tubes on the test-tube rack. Above step motion mechanism utilizes first driver drive plectrum to rotate, can promote the certain distance of test-tube rack step motion when the plectrum rotates to make each test tube on the test-tube rack loop through and draw the station, first liquid mechanism of getting can draw the sample liquid in each test tube in proper order in drawing station department, this step motion structure is simple and easy, low cost, reliable operation.

Wherein, be equipped with on the plectrum and collude the portion, correspondingly, the position that the bottom of test-tube rack corresponds every test tube all sets up the recess that corresponds with colluding the portion, and when rotating the plectrum, collude the portion and can get into in the recess that corresponds and promote the test-tube rack towards discharge mechanism direction step motion.

Preferably, a plurality of shifting pieces are distributed below the guide channel at intervals along the length direction of the guide channel, openings corresponding to the shifting pieces one to one are formed in the bottom of the guide channel, and the shifting pieces can extend upwards from the openings to the guide channel so as to shift the test tube rack on the guide channel. The plectrum can contact with the bottom of test-tube rack, and a plurality of plectrums improve test-tube rack step motion's stability, and the test-tube rack is difficult to take place the card phenomenon dead along the feed end of direction passageway carries to the discharge end in-process.

Preferably, draw and dispose the photoelectric sensor who is used for the count on the station, draw to be equipped with on the station with photoelectric sensor relatively sweep a yard device, should sweep the bar code information that a yard device is used for the test tube on the discernment test-tube rack, photoelectric sensor with sweep a yard device and be located the both sides of test-tube rack respectively, can count the quantity of the test tube that has examined through photoelectric sensor, then can acquire the required test item of accomplishing of sample in this test tube through sweeping a yard device to realize intelligent detection.

Preferably, the first liquid taking mechanism comprises a first rotating arm, a first suction needle for sucking the sample liquid is arranged on the first rotating arm, the extraction station is located at one end of the movement stroke of the first rotating arm, a first test station located at the other end of the movement stroke of the first rotating arm is arranged on the workbench, one of the reaction cups on the reaction disk is located on the first test station, the first liquid taking mechanism transmits movement between two fixed point positions of the extraction station and the first test station through the first rotating arm, different sample liquids can be sequentially conveyed to different reaction cups by matching with the rotation of the reaction disk, and the movement transmission is accurate and stable; the first cleaning mechanism is arranged on the workbench and used for cleaning the first suction needle, the first cleaning mechanism is located above the movement stroke of the first rotating arm and between the extracting station and the first testing station, and the first cleaning mechanism can reduce the influence of residual original sample liquid of the first suction needle on a testing result.

The second liquid taking mechanism comprises a second rotating arm, a second suction needle for sucking sample liquid is arranged on the second rotating arm, a second sampling station and a second testing station which are respectively positioned at two ends of the movement stroke of the second rotating arm are arranged on the workbench, one reaction cup on the reaction disc is positioned on the second testing station, one reaction kit on the reagent disc is positioned on the second sampling station, the second liquid taking mechanism transmits movement between two fixed point positions of the second sampling station and the second testing station through the second rotating arm, different reaction liquids can be sequentially conveyed to the corresponding reaction cups by matching with the rotation of the reaction disc and the reagent disc, and the movement transmission is accurate and stable; the second cleaning mechanism is arranged on the workbench and used for cleaning the second suction needle, the second cleaning mechanism is located above the movement stroke of the second rotating arm and between the second sampling station and the second testing station, and the second cleaning mechanism can reduce the influence of residual original reaction liquid of the second suction needle on the testing result.

Preferably, the reagent tray is provided with a cooling device for reducing the temperature of the reaction reagent box, the cooling device comprises a semiconductor refrigeration chip, the cold end of the semiconductor refrigeration chip is connected with the reagent tray, the hot end of the semiconductor refrigeration chip is connected with a radiator, and the workbench is provided with an air draft device facing the radiator. The cooling device has the effect of prolonging the shelf life of reaction liquid in the reaction reagent box, and compared with the traditional refrigeration system, the cooling device has the advantages of small structure, low cost and suitability for refrigeration requirements with smaller range.

Preferably, the reaction disc is further provided with a heating device for increasing the temperature of the reaction cup, and the heating device can accelerate the reaction rate of the sample liquid and the reaction liquid and improve the detection efficiency.

The utility model has the advantages that: the biochemical analyzer with the structure pushes the test tubes on the test tube rack to pass through the extraction station in sequence under the combined action of the feeding mechanism, the discharging mechanism and the stepping movement mechanism, the first liquid taking mechanism extracts sample liquid of the test tubes on the extraction station and conveys the sample liquid into one reaction cup of the reaction disk, the second liquid taking mechanism extracts reaction liquid in one reaction reagent box and conveys the reaction liquid into the corresponding reaction cup, and after the sample liquid in the reaction cup reacts, the photoelectric detection mechanism detects the reaction liquid, so that the full-automatic detection function is realized, the detection efficiency is improved, and the detection accuracy is ensured.

Drawings

The invention will be further explained with reference to the drawings and the detailed description.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of FIG. 1 with the second frame, feed mechanism, discharge mechanism and step movement mechanism removed;

FIG. 3 is a schematic structural view of the housing structure of FIG. 2 with a portion of the table removed;

FIG. 4 is a schematic structural view of the second frame, the feeding mechanism, the discharging mechanism and the stepping movement mechanism;

FIG. 5 is a schematic view of the internal structure of FIG. 4;

FIG. 6 is a schematic view of the structure of FIG. 5 from another perspective;

FIG. 7 is a schematic view of the structure in which the automatic cleaning apparatus is provided at one side of the reaction tray;

FIG. 8 is a schematic structural view of one embodiment of an automatic cleaning apparatus;

FIG. 9 is a schematic view of the lifting mechanism of FIG. 8 with the lifting mechanism removed;

fig. 10 is a schematic view of the structure of the bracket and the adjustment mechanism of fig. 9.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, fig. 3, fig. 4, fig. 5, and fig. 6, the present invention provides a biochemical analyzer, including: a work table 1; the reaction disk 2 is rotatably arranged on the workbench 1, and a plurality of transparent reaction cups 21 distributed around the circumference of the rotation center of the reaction disk 2 are arranged on the reaction disk 2; the reagent disk 3 is rotatably arranged on the workbench 1 and is positioned at one side of the reaction disk 2, and a plurality of reaction reagent boxes 31 distributed around the circumference of the rotation center of the reagent disk 3 are arranged on the reagent disk 3; a feeding mechanism 810 which is located at the front end of the workbench 1 and can reciprocate along the front-back direction of the workbench 1 to convey the test tube rack 200; the discharging mechanism 820 is positioned at the front end of the workbench 1 and at one side of the feeding mechanism 810, and can reciprocate along the front-back direction of the workbench 1 to convey the test tube rack 200; the extraction station 101 is arranged on the workbench 1 and positioned between the feeding mechanism 810 and the discharging mechanism 820, and the extraction station 101 corresponds to one test tube on the test tube rack 200; the stepping movement mechanism 830 is configured to drive the test tube rack 200 on one side of the feeding mechanism 810 to move in a stepping manner towards one side of the discharging mechanism 820, so that the test tubes on the test tube rack 200 sequentially pass through the extraction station 101; the first liquid taking mechanism 4 is arranged on the workbench 1 and used for taking the sample liquid in the test tube on the extraction station 101 and conveying the sample liquid to one of the reaction cups 21; the second liquid taking mechanism 5 is arranged on the workbench 1 and used for extracting the reaction liquid in one of the reaction kits 31 and conveying the reaction liquid to the corresponding reaction cup 21; and photoelectric detection mechanisms 6 which are located on opposite sides of the cuvette 21 and detect data information of the sample solution to which the reaction solution has been added. The biochemical analyzer with the above structure pushes the test tubes on the test tube rack 200 to pass through the extraction station 101 in sequence under the combined action of the feeding mechanism 810, the discharging mechanism 820 and the stepping movement mechanism 830, the first liquid taking mechanism 4 extracts the sample liquid of the test tube on the extraction station 101 and conveys the sample liquid to one of the reaction cups 21 of the reaction tray 2, the second liquid taking mechanism 5 extracts the reaction liquid in one of the reaction kits 31 and conveys the reaction liquid to the corresponding reaction cup 21, and after the sample liquid in the reaction cup 21 reacts, the photoelectric detection mechanism 6 detects the sample liquid, so that the automatic detection effect is realized, the detection efficiency is improved, and the detection accuracy is ensured.

The working principle of the photodetecting mechanism 6 is well known to those skilled in the art, and here, the following is briefly described: the photoelectric detection mechanism 6 comprises a light source and a light source receiving end, the light source and the light source receiving end are respectively positioned at two opposite sides of the reaction cup 21 to be tested, the light source receiving end is provided with a plurality of light ray channels, each light ray channel is respectively provided with an optical filter, light rays of the light source pass through the transparent reaction cup 21 and then enter each light ray channel, corresponding data information can be obtained through the filtering action of the optical filters, and the control system converts the data information into an A/D value so as to obtain corresponding test data. Because the optical characteristics of different sample liquids after reaction are different, the spectral information after passing through the optical filter on the light channel is different.

Referring to fig. 1 to 3, preferably, the workbench 1 is provided with a stirring device 7 for uniformly mixing the sample solution and the reaction solution in the reaction cup 21, and the stirring device 7 is helpful for sufficiently mixing the sample solution and the reaction solution, so as to accelerate the reaction rate and improve the detection efficiency.

Preferably, the reagent tray 3 is provided with a cooling device 107 for reducing the temperature of the reaction reagent kit 31, the cooling device 107 comprises a semiconductor refrigeration chip, the cold end of the semiconductor refrigeration chip is connected with the reagent tray 3, the hot end of the semiconductor refrigeration chip is connected with a radiator, and the workbench 1 is provided with an air draft device facing the radiator. The cooling device 107 has the effect of prolonging the shelf life of the reaction liquid in the reaction kit 31, and compared with the traditional refrigeration system, the cooling device has the advantages of small structure, low cost and suitability for refrigeration with a smaller range.

Preferably, a heating device (not shown) for raising the temperature of the reaction cup 21 is disposed on the reaction tray 2, and the heating device can accelerate the reaction rate of the sample solution and the reaction solution, so as to improve the detection efficiency.

Referring to fig. 2 and 3, an automatic cleaning device 9 is arranged on the working table 1, and the automatic cleaning device 9 is used for cleaning the reaction cups 21 after detection. The reaction cup 21 after the detection is cleaned by the automatic cleaning device 9, so that the influence of the original sample liquid on the test result of the next sample liquid is avoided.

Referring to fig. 7 to 10, preferably, the automatic cleaning device 9 comprises: the first bracket 91 is movably arranged on the workbench 1 and is positioned at one side of the reaction disc 2; at least one first tube group 92 provided on the first holder 91 for injecting a cleaning liquid into the reaction cup 21 and extracting a liquid from the reaction cup 21, each first tube group 92 corresponding to one reaction cup 21; at least one second tube group 93, disposed on the first support 91 and located behind the first tube group 92 (where "behind" is behind the rotation direction of the reaction cups 21 on the reaction tray 2), for injecting clean water into the reaction cups 21 and extracting liquid from the reaction cups 21, wherein each second tube group 93 corresponds to one reaction cup 21; and an elevating mechanism 96 connected to the first support 91 for driving the first support 91 to descend to allow the first tube set 92 and the second tube set 93 to descend into the corresponding reaction cup 21, or driving the first support 91 to ascend to allow the first tube set 92 and the second tube set 93 to be separated from the corresponding reaction cup 21. Above automatic cleaning device 9 utilizes first nest of tubes 92 to take out the sample liquid that the test finishes, then pour into the washing liquid and wash reaction cup 21, then reaction disc 2 rotates the station distance of a reaction cup 21, second nest of tubes 93 takes out the washing liquid, then pour into the clear water and wash reaction cup 21, then take out the clear water, combine the rotation of reaction disc 2, can realize automatic clear function, it is clean effectual, high efficiency, avoid remaining sample liquid in the reaction cup 21 can cause the influence to the measuring result of the sample liquid of interpolation once more, ensure measuring result's accuracy.

In some embodiments of the present invention, the first support 91 includes a support body 911 and a mounting frame 912 disposed on the support body 911, the support body 911 is vertically slidably disposed on one side of the reaction tray 2, the mounting frame 912 is disposed above the reaction tray 2 and is used for mounting the first tube set 92 and the second tube set 93, and an adjusting mechanism 97 for adjusting the position of the mounting frame 912 relative to the support body 911 is connected between the mounting frame 912 and the support body 911. The adjusting mechanism 97 can adjust the position of the mounting frame 912 relative to the support body 911 to align the first tube set 92 and the second tube set 93 with the corresponding reaction cups 21, so as to prevent the liquid from overflowing and affecting the cleaning effect.

Referring to fig. 10, preferably, in some embodiments of the present invention, the adjusting mechanism 97 includes a waist-shaped hole 971 formed on the mounting frame 912 and a mounting hole 972 formed on the supporting body 911, the length direction of the waist-shaped hole 971 extends toward the reaction disk 2, and a threaded fastener 973 passes through the waist-shaped hole 971 to be screwed with the mounting hole 972. The adjusting mechanism 97 has a simple structure and is convenient to adjust.

Preferably, the first support 91 is further provided with at least one third suction pipe 94 positioned behind the second pipe group 93, the lower part of the third suction pipe 94 positioned at the tail end is provided with a cleaning member 95 capable of contacting with the inner wall of the reaction cup 21, the cleaning member 95 can move downwards relative to the inner wall of the reaction cup 21 to clean the liquid on the inner wall of the reaction cup 21 to the bottom of the reaction cup 21, and the third suction pipe 94 extends downwards to the bottom of the reaction cup 21. After being cleaned by clean water, the cleaning member 95 cooperating with the third suction tube 94 can remove the clean water remained in the reaction cup 21, so as to avoid diluting the sample liquid when the sample liquid is added again, and ensure the accuracy of the test result.

Preferably, an elastic member 98 for urging the third suction pipe 94 against the bottom of the reaction cup 21 is further connected between the third suction pipe 94 and the first support 91. The elastic member 98 ensures that the third suction pipe 94 can abut against the bottom of the reaction cup 21, which facilitates the extraction of the clean water in the reaction cup 21.

Preferably, the cleaning member 95 is a plastic member sleeved on the third suction pipe 94, the plastic member is not stained with water, and does not cause a large amount of clean water to adhere to the surface of the plastic member, and the plastic member is installed on the third suction pipe 94 in a sleeved manner, so that the plastic member is convenient to detach, replace and maintain.

Preferably, the first tube set 92, the second tube set 93 and the third suction tube 94 are sequentially arranged and form a circular arc shape, and the first tube set 92, the second tube set 93 and the third suction tube 94 correspond to the reaction cups 21 on the reaction tray 2 one by one.

Wherein the first tube group 92 includes a first suction tube and a first discharge tube for discharging the cleaning liquid; the second pipe group 93 includes a second liquid suction pipe and a second liquid discharge pipe for discharging clean water.

Referring to fig. 4 to 6, preferably, a second rack 801 is arranged at the front end of the working table 1, a transverse guide channel 802 is arranged on the second rack 801, the extraction station 101 is arranged on the guide channel 802, the feeding mechanism 810 and the discharging mechanism 820 are respectively located at two ends of the guide channel 802, the step movement mechanism 830 includes a dial 831 rotatably arranged on the second rack 801 and a first driver 832 for driving the dial 831 to rotate, the dial 831 can dial the test tube rack 200 on the guide channel 802 to move in a step manner towards one side of the discharging mechanism 820, and the distance of each step movement of the test tube rack 200 is the distance between two adjacent test tubes on the test tube rack 200. Above step motion mechanism 830 utilizes first driver 832 to drive plectrum 831 and rotates, can promote the certain distance of test-tube rack 200 step motion when plectrum 831 rotates to make each test tube on test-tube rack 200 loop through and draw station 101, first liquid mechanism 4 of getting can draw the sample liquid in each test tube in proper order in drawing station 101 department, and this step motion structure is simple and easy, low cost, the reliable operation.

Wherein, be equipped with on plectrum 831 and collude the portion, correspondingly, the position that the bottom of test-tube rack 200 corresponds every test tube all sets up the recess that corresponds with colluding the portion, and when rotating plectrum 831, collude the portion and can get into in the recess that corresponds and promote test-tube rack 200 towards discharge mechanism 820 direction step motion.

Preferably, a plurality of shifting pieces 831 are distributed at intervals along the length direction below the guide channel 802, openings corresponding to the shifting pieces 831 one to one are formed in the bottom of the guide channel 802, and the shifting pieces 831 can extend upwards from the openings into the guide channel 802 to shift the test tube racks 200 on the guide channel 802. The shifting sheet 831 can be in contact with the bottom of the test tube rack 200, the plurality of shifting sheets 831 improve the stability of the stepping motion of the test tube rack 200, and the test tube rack 200 is not easy to block along the feeding end of the guide channel 802 in the process of being conveyed to the discharging end.

Preferably, the first driver 832 includes a first motor and a timing belt mechanism driven by the first motor to rotate, and the timing belt mechanism is linked with each of the shifting blades 831 to drive all the shifting blades 831 to rotate synchronously.

In order to prevent the test tube rack 200 from being separated from the guide channel 802 from the end of the guide channel 802 close to the discharging mechanism 820, a blocking block is arranged on the second rack 801 and is positioned at the end of the guide channel 802 close to the discharging mechanism 820.

Preferably, the feeding mechanism 810 includes a first sliding frame 811 capable of sliding back and forth along the front and rear direction of the second rack 801 and a first linear mechanism 812 driving the first sliding frame 811 to slide back and forth, the left and right ends of the first sliding frame 811 are respectively provided with a first pushing portion 8111 for abutting against the side wall of the test tube rack 200, and the second rack 801 is provided with a first guide groove 8011 for the first pushing portion 8111 to slide back and forth. The first guide groove 8011 guides the first pushing portion 8111, and helps the first carriage 811 slide back and forth smoothly.

Preferably, the discharging mechanism 820 includes a second sliding frame 821 capable of sliding back and forth along the front and rear direction of the second rack 801 and a second linear mechanism driving the second sliding frame 821 to slide back and forth, the left and right ends of the second sliding frame 821 are respectively provided with a second pushing portion 8211 abutting against the side wall of the test tube rack 200, and the side wall of the guide channel 802 is provided with an open slot corresponding to the second pushing portion 8211. In the present embodiment, the first linear mechanism 812 and the second linear mechanism have the same structure, and both are configured to drive the timing belt to rotate forward or backward by the servo motor. In other embodiments, the first linear mechanism 812, the second linear mechanism may be replaced by a piston cylinder, a linear motor, or the like.

Preferably, draw and dispose the photoelectric sensor who is used for the count on the station 101, draw and be equipped with on the station 101 with photoelectric sensor relative sweep a yard device, should sweep the bar code information that a yard device is used for the test tube on the discernment test-tube rack 200, photoelectric sensor with sweep a yard device and be located the both sides of test-tube rack 200 respectively, can count the quantity of the test tube that has examined through photoelectric sensor, then can acquire the required test item of accomplishing of sample in this test tube through sweeping a yard device to realize intelligent detection.

Referring to fig. 2, preferably, the first liquid taking mechanism 4 includes a first rotating arm, a first suction needle for sucking the sample liquid is arranged on the first rotating arm, the extraction station 101 is located at one end of the movement stroke of the first rotating arm, a first test station 102 located at the other end of the movement stroke of the first rotating arm is arranged on the workbench 1, one of the reaction cups 21 on the reaction disk 2 is located on the first test station 102, the first liquid taking mechanism 4 transmits motion between two fixed positions of the extraction station 101 and the first test station 102 through the first rotating arm, different sample liquids can be sequentially conveyed to different reaction cups 21 by matching with the rotation of the reaction disk 2, and the motion transmission is accurate and stable; the workbench 1 is provided with a first cleaning mechanism 105 for cleaning the first suction needle, the first cleaning mechanism 105 is positioned above the movement stroke of the first rotating arm and between the extraction station 101 and the first testing station 102, and the first cleaning mechanism 105 can reduce the influence of the residual original sample liquid of the first suction needle on the testing result. For example, the first cleaning mechanism 105 includes a first cup containing clean water and a second cup containing a cleaning solution, and the first cup and the second cup are respectively used for immersing the first suction needle to reduce the sample liquid residue.

Referring to fig. 2, the second liquid taking mechanism 5 includes a second rotating arm, a second suction needle for sucking a sample liquid is arranged on the second rotating arm, a second sampling station 103 and a second testing station 104 which are respectively located at two ends of a movement stroke of the second rotating arm are arranged on the workbench 1, one of the reaction cups 21 on the reaction disk 2 is located on the second testing station 104, one of the reaction reagent kits 31 on the reagent disk 3 is located on the second sampling station 103, the second liquid taking mechanism 5 transmits motion between two fixed-point positions of the second sampling station 103 and the second testing station 104 through the second rotating arm, different reaction liquids can be sequentially transmitted to the corresponding reaction cups 21 by matching with the rotation of the reaction disk 2 and the reagent disk 3, and the motion transmission is accurate and stable; the workbench 1 is provided with a second cleaning mechanism 106 for cleaning the second suction needle, the second cleaning mechanism 106 is positioned above the movement stroke of the second rotating arm and between the second sampling station 103 and the second testing station 104, and the second cleaning mechanism 106 can reduce the influence of the residual original reaction liquid of the second suction needle on the testing result. For example, the second cleaning mechanism 106 includes a third cup filled with clean water, and the third cup is used for immersing the second suction needle to reduce the reaction liquid residue.

The utility model discloses an among the biochemical analyzer, still including the control system who is used for controlling each part function, this control system gets liquid mechanism 5, photoelectric detection mechanism 6, agitating unit 7, feed mechanism 810, discharge mechanism 820, step motion mechanism 830, self-cleaning device 9 electric connection with reaction dish 2, reagent dish 3, the first liquid mechanism 4 of getting, second respectively to control each part action.

The working process of the biochemical analyzer is as follows: the test tube loaded with the sample liquid to be detected is placed on the test tube rack 200 positioned on one side of the feeding mechanism 810, the feeding mechanism 810 pushes the test tube rack 200 forward to enable the test tube rack 200 to be close to the workbench 1, when the test tube rack 200 moves to the stroke end of the first sliding frame 811, the stepping movement mechanism 830 receives the test tube rack 200, under the action of the stepping movement mechanism 830, the test tube rack 200 moves in a stepping manner towards one side of the discharging mechanism 820, the extraction station 101 is positioned at a fixed position between the feeding mechanism 810 and the discharging mechanism 820, during the stepping movement of the test tube rack 200, the extraction station 101 corresponds to one test tube on the test tube rack 200, one test tube corresponding to the extraction station 101 is replaced every time when the test tube rack 200 moves in a stepping manner, the first suction needle on the first liquid extraction mechanism 4 sucks the sample liquid in the test tube and then conveys the sample liquid to the reaction cup 21 corresponding to the first test station 102, when the reaction cup 21 rotates counterclockwise to the second testing station 104, the second suction needle of the second liquid taking mechanism 5 sucks the reaction liquid in one of the reaction kits 31 and conveys the reaction liquid to the reaction cup 21 to be mixed with the sample liquid, when the reaction cup 21 continues to rotate counterclockwise to the station corresponding to the stirring device 7, the stirring device 7 stirs the liquid in the reaction cup 21 to accelerate the reaction, and finally, the reaction cup 21 rotates to the vicinity of the photoelectric detection mechanism 6 to be detected by the photoelectric detection mechanism 6. The test tube rack 200 moves to one side of the discharging mechanism 820 under the action of the stepping movement mechanism 830, the second sliding rack 821 receives the test tube rack 200, then the test tube rack 200 is conveyed towards the direction far away from the workbench 1, so that the test tube rack 200 is stacked together, and finally the test tube rack 200 is conveyed away through manual work or other conveying devices.

The above is only the preferred embodiment of the present invention, not limiting the patent scope of the present invention, all of which are under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct or indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims (10)

1. A biochemical analyzer, comprising:

a work table;

the reaction disc is rotatably arranged on the workbench, and a plurality of transparent reaction cups which are circumferentially distributed around the rotation center of the reaction disc are arranged on the reaction disc;

the reagent disk is rotatably arranged on the workbench and positioned on one side of the reaction disk, and a plurality of reaction kits distributed circumferentially around the rotation center of the reagent disk are arranged on the reagent disk;

the feeding mechanism is positioned at the front end of the workbench and can reciprocate along the front and back directions of the workbench to convey the test tube rack;

the discharging mechanism is positioned at the front end of the workbench and at one side of the feeding mechanism, and can reciprocate along the front-back direction of the workbench to convey the test tube rack;

the extraction station is arranged on the workbench and positioned between the feeding mechanism and the discharging mechanism, and corresponds to one test tube on the test tube rack;

the stepping movement mechanism is used for driving the test tube rack on one side of the feeding mechanism to move towards one side of the discharging mechanism in a stepping manner and enabling all test tubes on the test tube rack to sequentially pass through the extraction station;

the first liquid taking mechanism is arranged on the workbench and used for taking the sample liquid in the test tube on the extraction station and conveying the sample liquid to one of the reaction cups;

the second liquid taking mechanism is arranged on the workbench and used for taking the reaction liquid in one of the reaction reagent boxes and conveying the reaction liquid to the corresponding reaction cup;

and the photoelectric detection mechanisms are positioned on two opposite sides of the reaction cup and are used for detecting the data information of the sample liquid after the reaction liquid is added.

2. The biochemical analyzer of claim 1, wherein:

and the workbench is provided with a stirring device for uniformly mixing the sample liquid and the reaction liquid in the reaction cup.

3. The biochemical analyzer of claim 1, wherein:

and an automatic cleaning device is arranged on the workbench and used for cleaning the reaction cup after detection.

4. The biochemical analyzer of claim 3, wherein:

the automatic cleaning device includes:

the first bracket is movably arranged on the workbench and positioned on one side of the reaction disc;

at least one group of first pipe groups, which are arranged on the first bracket and used for injecting cleaning liquid into the reaction cups and extracting the liquid in the reaction cups, wherein each group of first pipe groups corresponds to one reaction cup;

the at least one group of second pipe groups are arranged on the first support, are positioned behind the first pipe groups and are used for injecting clear water into the reaction cups and extracting liquid in the reaction cups, and each group of second pipe groups corresponds to one reaction cup;

and the lifting mechanism is connected with the first support and is used for driving the first support to descend so as to enable the first tube group and the second tube group to extend downwards into the corresponding reaction cups, or driving the first support to ascend so as to enable the first tube group and the second tube group to be separated from the corresponding reaction cups.

5. The biochemical analyzer of claim 4, wherein:

the first support is further provided with at least one third suction pipe located behind the second pipe group, the lower portion of the third suction pipe located at the tail end is provided with a cleaning piece capable of being in contact with the inner wall of the reaction cup, the cleaning piece can move downwards relative to the inner wall of the reaction cup to clean liquid on the inner wall of the reaction cup to the bottom of the reaction cup, and the third suction pipe extends downwards to the bottom of the reaction cup.

6. The biochemical analyzer of claim 1, wherein:

the front end of workstation is equipped with the second frame, is equipped with a horizontal direction passageway in the second frame, draw the station and set up on direction passageway, feed mechanism and discharge mechanism are located the both ends of direction passageway respectively, step motion mechanism is including rotating plectrum and the first driver of drive plectrum pivoted that sets up in the second frame, the plectrum can stir one side step motion of test-tube rack orientation discharge mechanism on the direction passageway, and the distance of step motion at every turn of test-tube rack is the distance between two adjacent test tubes on the test-tube rack.

7. The biochemical analyzer of claim 6, wherein:

the test tube rack is characterized in that a plurality of shifting pieces are distributed below the guide channel at intervals along the length direction of the guide channel, openings corresponding to the shifting pieces one to one are formed in the bottom of the guide channel, and the shifting pieces can extend upwards into the guide channel from the openings to shift the test tube rack on the guide channel.

8. The biochemical analyzer of claim 1, wherein:

the first liquid taking mechanism comprises a first rotating arm, a first suction needle used for sucking sample liquid is arranged on the first rotating arm, the extracting station is located at one end of the moving stroke of the first rotating arm, a first testing station located at the other end of the moving stroke of the first rotating arm is arranged on the workbench, one of the reaction cups on the reaction disc is located on the first testing station, a first cleaning mechanism used for cleaning the first suction needle is arranged on the workbench, and the first cleaning mechanism is located on the moving stroke of the first rotating arm and between the extracting station and the first testing station.

9. The biochemical analyzer of claim 1, wherein:

the second liquid taking mechanism comprises a second rotating arm, a second suction needle used for sucking sample liquid is arranged on the second rotating arm, a second sampling station and a second testing station which are respectively located at two ends of the movement stroke of the second rotating arm are arranged on the workbench, one of reaction cups on the reaction disc is located on the second testing station, one of reaction kits on the reagent disc is located on the second sampling station, a second cleaning mechanism used for cleaning the second suction needle is arranged on the workbench, and the second cleaning mechanism is located on the movement stroke of the second rotating arm and between the second sampling station and the second testing station.

10. The biochemical analyzer of claim 1, wherein:

the reagent tray is provided with a cooling device for reducing the temperature of the reaction kit, the cooling device comprises a semiconductor refrigeration chip, the cold end of the semiconductor refrigeration chip is connected with the reagent tray, the hot end of the semiconductor refrigeration chip is connected with a radiator, and the workbench is provided with an air draft device which is opposite to the radiator.

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