Biochemical analyzer with ion-selective electrode module

Abstract

The application provides a biochemical analyzer with an ion selective electrode module, and relates to the technical field of medical instruments. The biochemical analyzer comprises an electrolyte detection module, and the electrolyte detection module specifically comprises: an ion selective electrode module, which comprises a shell and a plurality of electrodes arranged in the shell and sealed against each other to form an electrode channel; a sampling pool; a liquid detection box; a pump module, which comprises a first pumping assembly, a second pumping assembly and a third pumping assembly; a reagent pack module, which comprises a first reagent pack storing a first calibration liquid, a second reagent pack storing a second calibration liquid and a waste liquid piece for receiving waste liquid, the first calibration liquid, the second calibration liquid and a sample to be detected can pass through the electrode channel under the action of different pumping assemblies, and each pumping assembly comprises a clamping seat assembly elastically abutting against the first pump pipe, the second pump pipe and the third pump pipe correspondingly. The biochemical analyzer has the advantages of high accuracy and good reliability.

Description

[0001] This application is a divisional application of the invention patent application with the application number of 202411431354.1, the title of which is "Electrolyte detection module and biochemical analyzer", and the filing date of which is October 14, 2024. TECHNICAL FIELD

[0002] The present application relates to the technical field of medical devices, in particular to a biochemical analyzer with an ion-selective electrode module. BACKGROUND

[0003] Currently, the detection methods for Li + , Na + , K + , Cl - ion concentrations in serum, plasma or diluted urine samples in the clinic mainly include enzyme method, flame photometry and ion selective electrode method, etc. ISE is the abbreviation of ion selective electrode. The test methods of biochemical analyzers (using optical (colorimetric, turbidimetric) methods for measurement) and electrolyte detection modules using ISE (electrochemical method) are different, and a separate electrolyte detection module is needed to test ion item concentrations by electrode method on the biochemical analyzer, so as to meet the determination of Li + , Na + , K + , Cl - ion concentrations. Ion selective electrode analysis is an electrochemical technology that uses the relationship between electrode potential and ion activity to determine ion concentration. The change of electrode potential conforms to the NERNST equation, that is, the logarithm of ion activity in the solution and the electrode potential form a linear relationship. The "selection" of ion selective electrode refers to the fact that an ion is only sensitive to a specific electrode, that is, one specific electrode is needed to detect one ion. Therefore, the existing electrolyte detection module needs to be configured with multiple ion detection units that separately detect one ion.

[0004] The electrolyte detection module on the biochemical analyzer has been widely used in the clinic. Currently, ISE indirect method is mainly used for determination. The sample needs to be quantitatively diluted with a diluent, and then the electrode potential is measured. Ion selective electrode method is an analysis method with higher precision and accuracy, and therefore it is widely promoted in the clinic. However, the pumping mechanism of the electrolyte detection module on the biochemical analyzer for pumping reagents, samples and other liquids has the disadvantage that the amount of liquid pumped per unit time has a large difference due to the fact that the pump tube of the pumping mechanism cannot obtain a continuous elastic abutment force, which leads to a decrease in the accuracy of the detection and adversely affects the reliability of the detection. SUMMARY

[0005] The present application aims at the low accuracy and reliability of electrolyte detection in the prior art biochemical analyzers, and provides a biochemical analyzer with an ion-selective electrode module to achieve the purpose.

[0006] An electrolyte detection module is arranged in the biochemical analyzer, and the electrolyte detection module comprises:

[0007] The ion-selective electrode module comprises a housing and a plurality of electrodes arranged in the housing and sealed to each other, and an electrode channel is formed between each of the electrodes.

[0008] A sampling pool is arranged above the ion-selective electrode module, and the sampling pool is provided with a first liquid inlet, a second liquid inlet and a sample inlet capable of receiving a sample to be detected.

[0009] A liquid detection box is arranged between the sampling pool and the ion-selective electrode module, the sampling pool is connected with the electrode channel through the liquid detection box, and the liquid detection box detects the state of the liquid located therein.

[0010] A pump module comprises a first pumping assembly, a second pumping assembly and a third pumping assembly.

[0011] A reagent pack module comprises a first reagent pack storing a first calibration liquid, a second reagent pack storing a second calibration liquid and a waste liquid piece for receiving waste liquid, the liquid outlet of the first reagent pack is communicated with the first liquid inlet through the first pump pipe of the first pumping assembly, the liquid outlet of the second reagent pack is communicated with the second liquid inlet through the second pump pipe of the second pumping assembly, and the waste liquid outlet of the ion-selective electrode module located downstream of the electrode channel is communicated with the waste liquid inlet of the waste liquid piece through the third pump pipe of the third pumping assembly, the first calibration liquid, the second calibration liquid and the sample to be detected can pass through the electrode channel under the action of different pumping assemblies, and each pumping assembly comprises a clamping seat assembly elastically abutting the first pump pipe, the second pump pipe and the third pump pipe correspondingly.

[0012] Further, the pump module further comprises a mounting bracket for mounting each pumping assembly, each pumping assembly comprising a peristaltic pump and a rotating assembly, the peristaltic pump driving the rotating assembly to rotate, the clamping seat assembly comprising an elastic member, a fixed seat and a spring socket, the fixed seat comprising a fixed seat body and a plurality of seat fixing holes, a pair of abutting seats, a pair of clamping grooves and a first circular arc surface provided on the fixed seat body, the spring socket comprising a spring socket body and a pair of accommodating grooves, a pair of abutting holes, a pair of buckles and a second circular arc surface provided on the spring socket body, the abutting hole being provided at the top of the accommodating groove, the elastic member being arranged in the accommodating groove, the elastic member being elastically deformed between the pair of abutting seats and the abutting hole, the buckle and the clamping groove being pairedly clamped and matched, the spring socket being capable of moving up and down in the vertical direction under the elastic force of the elastic member to exert an elastic abutting force on the corresponding pump tube between the second circular arc surface and the rotating assembly, so that the corresponding pump tube stably and uniformly delivers liquid under the rotating force of the rotating assembly.

[0013] Further, the abutting seat comprises a convex plate having a circular arc convex surface and a convex block having a circular arc concave surface provided on the convex plate, the accommodating groove has a groove arc surface, the circular arc convex surface is abutted with the groove arc surface, the abutting hole is a circular through hole, and in the vertical direction, the projection edge of the circular arc concave surface overlaps with the projection edge of the abutting hole.

[0014] Further, the peristaltic pump comprises a pump body and a driving shaft, the rotating assembly comprises a rotating disc, a plurality of rotating roller assemblies and an end cover, the rotating disc is provided with a disc hole passing through the center line thereof and a plurality of disc through holes which are uniformly distributed around the disc hole and have the same number as the rotating roller assemblies, the rotating roller assembly comprises a plug column and a roller cylinder, the roller cylinder is provided with a cylinder through hole, one end of the plug column is fixed in the disc through hole and the other end protrudes and is inserted in the cylinder through hole, the plurality of roller cylinders of each rotating assembly are tangent to a common outer circle, each roller cylinder acts on the pump tube in turn and reciprocatingly to provide a liquid flow force, the end cover comprises a circular cover body and a convex column having a column hole extending along the center axis of the circular cover body, the driving shaft passes through the disc hole and the column hole to be fixed, the diameter value of the circular cover body and the outer diameter value of the rotating disc are both greater than the diameter value of the common outer circle, the end cover is opposite to the gap of the free end of each plug column, the rotating disc and the first circular arc surface have a common center and their circumferential surfaces are opposite to each other, and the radial distance value between the rotating disc and the first circular arc surface is greater than the pipe diameter value of the pump tube acted on by the roller cylinder.

[0015] Further, the fixed seat body is provided with a pair of grooves respectively communicated with the clamping groove, the grooves are located above the clamping groove and extend in the vertical direction, one groove vertical surface of the groove is connected with one groove vertical surface of the clamping groove, in the horizontal direction, the width of the groove is greater than the width of the clamping groove, the fixed seat is further provided with a protruding table protruding from the groove to the clamping groove, the protruding table is provided with a clamping guide surface inclined from the groove to the clamping groove, the buckle is inserted into the groove and elastically deformed to be clamped into the clamping groove under the guidance of the clamping guide surface, the buckle can move in the length direction of the clamping groove in the vertical direction, a pair of arc convex ribs are further arranged on the second arc surface of the elastic socket body, a pair of the arc convex ribs limit the pump pipe located therebetween in the radial direction.

[0016] Further, a pair of protruding sliding blocks are arranged on the surface of the elastic socket body facing the fixed seat body, the protruding sliding blocks are in the shape of a rectangular parallelepiped in the vertical direction, a recess is arranged in the protruding sliding block, in the clamping and fitting state of the buckle and the clamping groove, the elastic socket body and the fixed seat body are mutually attached, the protruding sliding blocks correspondingly slide on the outer side surfaces of the adjacent grooves and clamping grooves of the fixed seat body, and the recess is communicated with the groove.

[0017] Further, the pump module further comprises a plurality of fixing plates, each of the fixing plates is provided with a pair of plate slots, each of the plate slots is clamped with a guide pipe, one end of the pair of guide pipes is connected with two end pipe openings of a pump pipe respectively and the other end is connected with an ion selective electrode module and a reagent pack module through two liquid pipes respectively, three rack through holes and a plurality of rack fixing holes are formed on the mounting bracket, the fixing plates are arranged on the corresponding rack fixing holes, the fixing plates are provided with plate through holes and plate fixing holes, the plate through holes are used for partially penetrating the lug portion of the pump body around the drive shaft, a plurality of pump fixing holes are further provided on the pump body, the plurality of seat fixing holes comprise a pair of first seat fixing holes and a pair of second seat fixing holes, the fixing seat body comprises a pair of recesses which are recessed obliquely by a first circular surface towards the direction of the adjacent clamping slots and a pair of fixing columns which respectively face away from the recesses, the first seat fixing holes are arranged in the fixing columns and are communicated with the recesses, the second seat fixing holes are arranged at the lower end corners of the fixing seat body, a fixing member is arranged in the opposite plate fixing holes and the pump fixing holes, a fixing member is arranged in the opposite first seat fixing holes, the plate fixing holes and the pump fixing holes respectively, a fixing member is arranged in the opposite plate fixing holes and the rack fixing holes, and a fixing member is arranged in the opposite second seat fixing holes and the rack fixing holes; relative to the vertical plane passing through the center axis of the drive shaft, the pair of abutting seats, the pair of clamping slots, the pair of containing slots, the pair of abutting holes, the pair of buckles, the pair of grooves, the pair of protruding sliding blocks, the pair of first seat fixing holes and the pair of second seat fixing holes are symmetrically arranged.

[0018] Further, the electrolyte detection module further comprises a plurality of displacement assemblies which are respectively arranged corresponding to each of the pumping assemblies, each of the displacement assemblies comprises a driving motor and a threaded rod which is connected with the driving motor, the driving motor is capable of driving the threaded rod to rotate in a first direction and a second direction respectively, the elastic socket body is provided with a recess portion and a connecting portion which is opposite to the recess portion, a threaded hole is arranged in the connecting portion, the driving motor is fixed on the side of the connecting portion which is away from the recess portion, the threaded rod is threadedly connected in the threaded hole, the threaded rod is capable of doing extension and contraction relative to the recess portion, the reagent pack module is provided with a first flow rate detector and a second flow rate detector which are respectively used for detecting the flow rates of the first and second correction liquids and a third flow rate detector which is used for detecting the flow rate of the waste liquid, the driving motor controls the rotation direction and the rotation number of the threaded rod according to the flow rate detection values of the liquids pumped by the corresponding pumping assemblies which are detected by the corresponding flow rate detectors, so that the threaded rod drives the elastic socket body to move along or against the direction of the elastic force, thereby adjusting the elastic abutting force of the elastic socket of the corresponding clamping seat assembly to the corresponding pump pipe.

[0019] Further, the biochemical analyzer with the ion selective electrode module further comprises a controller, the driving motor and the flow rate detectors are capable of communicating with the controller in a wireless or wired manner, and the controller is capable of generating a control signal for controlling the driving motor to operate according to the communication data; when the flow rate detection value is less than a first preset flow rate value, the control signal is capable of controlling the driving motor to output a rotating force rotating in the first direction, so that the threaded rod drives the elastic socket body to move a certain distance in a parallel and opposite direction of the elastic force of the elastic member, so that the flow rate detection value meets the preset flow rate value; when the flow rate detection value is greater than a second preset flow rate value, the control signal is capable of controlling the driving motor to output a rotating force rotating in the second direction, so that the threaded rod drives the elastic socket body to move a certain distance in a direction parallel to the elastic force of the elastic member, so that the flow rate detection value meets the preset flow rate value; wherein the second preset flow rate value is greater than the first preset flow rate value by a preset percentage.

[0020] Further, the mounting bracket comprises a first mounting plate, a second mounting plate, a third mounting plate and a fourth mounting plate, the first mounting plate extends in a horizontal direction, the second mounting plate comprises a connecting branch, a fixed branch and a bent branch, the connecting branch is connected to the front edge of the first mounting plate and extends upward, the fixed branch is connected to the connecting branch and extends in a direction inclined to the first mounting plate at an acute angle, the bent branch is connected to the inclined end edge of the fixed branch, the bent branch and the fixed branch form an obtuse angle, the third mounting plate is connected to the side edge of the first mounting plate and extends upward, the fourth mounting plate is connected to the extended end of the third mounting plate and extends in a direction away from the bent branch, the bent branch is parallel to the fourth mounting plate, a socket is arranged on the third mounting plate, a plug is arranged on the side edge of the bent branch and is inserted into the socket, the third mounting plate and the fourth mounting plate are both provided with plate holes corresponding to the shell holes of the shell, the corresponding plate holes and the shell holes are fixedly connected by fixing members, the first mounting plate is provided with a tab having a locking hole, and a metal locking member is fixed in the locking hole to lock the mounting bracket in position and to ground the mounting bracket and the shell together.

[0021] The beneficial effects of the present application are:

[0022] The electrolyte detection module of the biochemical analyzer with the ion selective electrode module provided by the application can exert a constant elastic abutting force on the first pump pipe, the second pump pipe and the third pump pipe through the clamping seat component, so that the pump assembly can exert a constant elastic abutting force on the corresponding pump pipe through the clamping seat component, and the liquid in the pump pipe and the liquid in the entire liquid pipeline connected with the pump pipe can be pumped through the ion selective electrode module at a constant speed and a constant amount, so that the accuracy and reliability of detection are high. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings required to be used in the embodiments of the application will be briefly introduced as follows. Those skilled in the art can also obtain other drawings according to these drawings without any creative effort, and these drawings are within the protection scope of the application.

[0024] Figure 1 The figure is a schematic diagram of the overall structure of the electrolyte detection module of the embodiment of the application.

[0025] Figure 2 The figure is a schematic diagram of the structure of the pump module of the electrolyte detection module of the embodiment of the application.

[0026] Figure 3 The figure is a schematic diagram of the structure of the first pump assembly of the pump module of the electrolyte detection module of the embodiment of the application.

[0027] Figure 4 The figure is an exploded schematic diagram corresponding to Figure 3 .

[0028] Figure 5 The figure is a schematic diagram of the front view of the fixing seat of the pump assembly of the pump module of the electrolyte detection module of the embodiment of the application.

[0029] Figure 6 The figure is a schematic diagram of the rear view of the fixing seat of the pump assembly of the pump module of the electrolyte detection module of the embodiment of the application.

[0030] Figure 7 The figure is a schematic diagram of the front view of the elastic socket of the pump assembly of the pump module of the electrolyte detection module of the embodiment of the application.

[0031] Figure 8 The figure is a schematic diagram of the rear view of the elastic socket of the pump assembly of the pump module of the electrolyte detection module of the embodiment of the application.

[0032] Figure 9 The figure is a schematic diagram of the structure of the end cover of the pump assembly of the pump module of the electrolyte detection module of the embodiment of the application.

[0033] Figure 10 FIG. 1 is a structural schematic diagram of a mounting bracket of a pump module of an electrolyte detection module according to an embodiment of the present application;

[0034] Legend of reference signs:

[0035] 1, ion selective electrode module; 11, housing; 12, electrode; 2, sampling cell; 21, sample inlet; 3, liquid detection cartridge; 4, pump module; 41, first pumping assembly; 411, first pump tube; 42, second pumping assembly; 421, second pump tube; 43, third pumping assembly; 431, third pump tube; 44, clamping seat assembly; 441, elastic member; 442, fixed seat; 4421, fixed seat body; 44211, recessed portion; 44212, fixed column; 4422, first seat fixing hole; 4423, second seat fixing hole; 4424, abutting seat; 44241, protruding plate; 44242, protruding block; 4425, clamping groove; 4426, first circular arc surface; 4427, slotted portion; 4428, protruding platform; 44281, clamping surface; 443, elastic socket; 4431, elastic socket body; 4432, accommodating groove; 4433, abutting hole; 4434, clamping buckle; 4435, second circular arc surface; 4436, circular arc protruding rib; 4437, recessed portion; 4438, connecting portion; 447, protruding sliding block; 448, recessed portion; 45, fixed plate; 451, plate through hole; 452, plate fixing hole; 453, plate groove; 46, guide pipe; 47, peristaltic pump; 471, pump body; 4711, protruding flange; 4712, pump fixing hole; 472, drive shaft; 48, rotating assembly; 481, rotating disc; 4811, disc hole; 4812, disc through hole; 482, rotating roller assembly; 4821, insertion column; 4822, roller; 483, end cover; 4831, circular cover body; 4832, protruding column; 48321, column hole; 49, mounting bracket; 491, bracket through hole; 492, bracket fixing hole; 493, first mounting plate; 4931, locking hole; 4932, bent sheet; 494, second mounting plate; 4941, connecting branch plate; 4942, fixed branch plate; 4943, bent branch plate; 49431, insertion block; 495, third mounting plate; 4951, insertion opening; 496, fourth mounting plate; 497, plate hole; 5, reagent pack module. DETAILED DESCRIPTION

[0036] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. It should be noted that, in this document, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or sequence between these entities or operations. In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms “center”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Moreover, the terms “include”, “contain” or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the elements limited by the statement “include” do not exclude the presence of other identical elements in the process, method, article or device that includes the elements. The embodiments of the present application and the various features in the embodiments can be combined with each other without conflict, and are all within the protection scope of the present application.

[0037] Please refer to Figures 1 to 10The electrolyte detection module provided by the embodiment of the present application comprises: an ion selective electrode module 1, a sampling pool 2, a liquid detection box 3, a pump module 4 and a reagent pack module 5. The ion selective electrode module 1 comprises a shell 11 and a plurality of electrodes 12 arranged in the shell 11 and sealed against each other. It is known that the electrodes 12 can specifically comprise ion selective electrodes, i.e. ISE electrodes, and reference electrodes, and an electrode channel is formed between each electrode 12. The sampling pool 2 is arranged above the ion selective electrode module 1, and the sampling pool 2 is provided with a first liquid inlet, a second liquid inlet (not shown) and a sample inlet 21. The sample inlet 21 can receive a sample to be detected, and the sample to be detected can be delivered to the sampling pool 2 by a biochemical analyzer. The liquid detection box 3 is arranged between the sampling pool 2 and the ion selective electrode module 1. The sampling pool 2 is connected to the electrode channel via the liquid detection box 3. The liquid detection box 3 detects the state of the liquid located therein, and the state of the liquid includes the content of bubbles in the liquid, whether there is liquid or not. The pump module 4 comprises a first pumping assembly 41, a second pumping assembly 42 and a third pumping assembly 43. The reagent pack module 5 comprises a first reagent pack (not shown) storing a first calibration liquid, a second reagent pack (not shown) storing a second calibration liquid and a waste liquid piece (not shown) for receiving waste liquid. The waste liquid piece can be a waste liquid bag, a waste liquid collection barrel or the like. Figure 1The first reagent pack and the second reagent pack are arranged on the side of the reagent pack module 5, which facilitates the replacement of the reagent packs. When the waste liquid piece is a waste liquid bag, the waste liquid piece is also arranged on the side of the reagent pack module 5. When the waste liquid piece is a waste liquid collecting barrel, the waste liquid piece can be arranged outside the electrolyte detection module as an external piece. The first correction liquid can be a drift correction liquid, and the second correction liquid can be a slope correction liquid. The liquid outlet of the first reagent pack is communicated with the first liquid inlet of the ion selective electrode module 1 through the first pump pipe 411 of the first pumping assembly 41. The liquid outlet of the second reagent pack is communicated with the second liquid inlet of the ion selective electrode module 1 through the second pump pipe 421 of the second pumping assembly 42. The waste liquid outlet of the ion selective electrode module 1 located downstream of the electrode channel is communicated with the waste liquid inlet of the waste liquid piece through the third pump pipe 431 of the third pumping assembly 43. The first correction liquid can be transported to the waste liquid piece through the electrode channel under the pumping action of the first pumping assembly 41 and the pumping action of the third pumping assembly 43. The second correction liquid can be transported to the waste liquid piece through the electrode channel under the pumping action of the second pumping assembly 42 and the pumping action of the third pumping assembly 43. The sample to be detected can be transported to the waste liquid piece through the electrode channel under the pumping action of the third pumping assembly 43. The first liquid inlet and the second liquid inlet of the ion selective electrode module 1, and the waste liquid outlet are communicated through the electrode channel. The liquid in the sampling cell 2 is transported to the electrode channel by the third pumping assembly 43 for detection, cleaning of the electrode 12, and the like. More specifically, the liquid in the housing 11 flows through the sampling cell 2, the liquid detection box 3, the Li+ electrode 12, the Na+ electrode 12, the K+ electrode 12, the Cl electrode 12, the reference electrode 12, the pressure plate, and the pressure plate adapter in sequence. The pressure plate and the pressure plate adapter are known to those skilled in the art, and will not be described here. The two correction liquids and the sample to be detected are transported to the electrode channel by the three pumping assemblies. The first correction liquid and the second correction liquid are transported to the sampling cell 2 by two separate peristaltic pumps. The waste liquid outlet of the ion selective electrode module 1 is arranged on the pressure plate adapter. Each pumping assembly includes a clamping seat assembly 44 elastically abutting the first pump pipe 411, the second pump pipe 421, and the third pump pipe 431, respectively.

[0038] Therefore, by arranging the first, second and third pumping assemblies 41, 42 and 43 with the corresponding clamping seat assemblies 44 which apply elastic abutting force to the first, second and third pump tubes 411, 421 and 431 respectively, the pumping assemblies can apply constant elastic abutting force to the corresponding pump tubes, so that the liquid in the pump tubes and the entire liquid pipeline connected with the pump tubes can be pumped at a uniform speed and amount through the ion-selective electrode module 1, thereby ensuring that the amount of liquid pumped per unit time is basically the same, ensuring that each electrode 12 obtains an accurate amount of correction liquid or sample liquid within a predetermined time, and reducing the running error of the peristaltic pump 47 or the adverse effect of uncalibration on the accurate liquid pumping amount, so that the detection accuracy and reliability are high.

[0039] Please refer to Figures 2 to 8 In particular, the pump module 4 further comprises a mounting bracket 49 for mounting the pumping assemblies, each of which comprises a peristaltic pump 47 and a rotating assembly 48, the peristaltic pump 47 driving the rotating assembly 48 to rotate, the clamping seat assembly 44 comprising an elastic member 441, a fixed seat 442 and a spring socket 443, the fixed seat 442 comprising a fixed seat body 4421 and a plurality of seat fixing holes arranged on the fixed seat body 4421, a pair of abutting seats 4424, a pair of clamping grooves 4425 and a first circular arc surface 4426, the spring socket 443 comprising a spring socket body 4431 and a pair of accommodating grooves 4432, a pair of abutting holes 4433, a pair of buckles 4434 and a second circular arc surface 4435 arranged on the spring socket body 4431, the abutting holes 4433 being arranged at the top of the accommodating grooves 4432, the elastic member 441 being arranged in the accommodating grooves 4432, for example, being elastically compressed and deformed between the pair of abutting seats 4424 and the abutting holes 4433, the buckles 4434 and the clamping grooves 4425 being paired and clamped and matched, the spring socket 443 being movable up and down in the vertical direction under the elastic force of the elastic member 441 to apply elastic abutting force to the corresponding pump tube between the second circular arc surface 4435 and the rotating assembly 48, so that the corresponding pump tube stably and uniformly delivers liquid under the rotating force of the rotating assembly 48. In this way, the fixed seat 442 and the spring socket 443 of the clamping seat assembly 44 are reliably connected, and the elastic member 441 is well positioned between the fixed seat 442 and the spring socket 443 to apply an elastic force vertically upward to the spring socket 443, ensuring that the second circular arc surface 4435 remains in abutting pressure with the corresponding pump tube, so that the pipe diameter of the pump tube remains consistent between the second circular arc surface 4435 and the rotating assembly 48, especially the rollers (to be further described below), thereby ensuring that the volume of liquid flowing through the cross section of the pump tube per unit time remains consistent.

[0040] Please refer to Figures 5 to 8Preferably, the abutting seat 4424 comprises a convex plate 44241 with a circular-arc convex surface and a convex block 44242 with a circular-arc concave surface arranged on the convex plate 44241, the accommodating groove 4432 has a groove arc surface, the circular-arc convex surface abuts the groove arc surface in a matched manner, the abutting hole 4433 is a circular through hole, in the vertical direction, the projection edge of the circular-arc concave surface overlaps the projection edge of the abutting hole 4433, the elastic member 441 is a spring, not only the two ends of the spring in a circular shape are reliably positioned between the abutting hole 4433 and the convex plate 44241, but also the groove arc surface can limit the middle part of the spring, and the spring has low cost and the corresponding relationship between the compression deformation amount and the compression elastic recovery force is easy to determine, so that the stroke of the spring socket 443 in the vertical direction can be accurately determined.

[0041] Please refer to Figure 4 Specifically, the peristaltic pump 47 comprises a pump body 471 and a driving shaft 472, the rotating assembly 48 comprises a rotating disc 481, a plurality of rotating roller assemblies 482 and an end cover 483, the rotating disc 481 is provided with a disc hole 4811 passing through the center line thereof and a plurality of disc through holes 4812 same in number as the rotating roller assemblies 482 and uniformly distributed around the disc hole 4811, the rotating roller assembly 482 comprises a plug column 4821 and a roller cylinder 4822, the roller cylinder 4822 is provided with a cylinder through hole, one end of the plug column 4821 is fixed in the disc through hole 4812 and the other end protrudes and is inserted in the cylinder through hole, the insertion can be fixed insertion or rotating insertion, the plurality of roller cylinders 4822 of each rotating assembly 48 are tangent to a common outer circle, and each roller cylinder 4822 acts on the pump tube in turn and reciprocatingly to provide a liquid flow force, in this way, the pump tube can uniformly deliver liquid, the end cover 483 comprises a circular cover body 4831 and a convex column 4832 extending along the center axis of the circular cover body 4831 and provided with a column hole 48321, the driving shaft 472 is fixed through the disc hole 4811 and the column hole 48321, and the diameter value of the circular cover body 4831 and the outer diameter value of the rotating disc 481 are both greater than the diameter value of the common outer circle, so that the end cover 483 and the rotating disc 481 can limit the pump tube between them to prevent the pump tube from being separated outward from the roller cylinder 4822.

[0042] Please refer to Figures 4 to 8, specifically, the fixed seat body 4421 is provided with a pair of grooves 4427 respectively communicating with a clamping groove 4425, the grooves 4427 are located above the clamping groove 4425 and extend in the vertical direction, one groove vertical surface of the groove 4427 is connected with one groove vertical surface of the clamping groove 4425, in the horizontal direction, the width of the groove 4427 is greater than the width of the clamping groove 4425, the fixed seat 442 is also provided with a protruding table 4428 protruding from the groove 4427 to the clamping groove 4425, the protruding table 4428 is provided with a clamping surface 44281 inclined from the groove 4427 to the clamping groove 4425, the buckle 4434 is inserted into the groove 4427 and elastically deformedly clamped into the clamping groove 4425 under the guidance of the clamping surface 44281, thus, the pair of buckles 4434 can be elastically deformedly inserted into the clamping groove 4425 and clamped with the clamping groove 4425 under the guidance of the pair of clamping surfaces 44281, thereby achieving the installation of the buckle 4434 and the reliable elastic clamping of the spring socket 443 with the fixed seat 442. The buckle 4434 can move in the length direction of the clamping groove 4425 in the vertical direction, thus, the stroke of the buckle 4434 in the vertical direction can be accurately limited by the length of the clamping groove 4425. A pair of arcuate ribs 4436 are also spaced apart on the second arcuate surface 4435 of the spring socket body 4431, which limits the pump pipe located therebetween in the radial direction, thus, the pump pipe is reliably limited in the radial and circumferential directions.

[0043] Please refer to Figure 6 and Figure 8 , specifically, a pair of protruding sliding blocks 447 are provided on the surface of the spring socket body 4431 facing the fixed seat body 4421, the protruding sliding blocks 447 are rectangular parallelepiped-shaped in the vertical direction, a recess 448 is provided in the protruding sliding block 447, in the clamping and fitting state of the buckle 4434 and the clamping groove 4425, the spring socket body 4431 and the fixed seat body 4421 are mutually attached, the protruding sliding block 447 correspondingly slides on the outer side surface of the adjacent groove 4427 and clamping groove 4425 of the fixed seat body 4421, and the recess 448 communicates with the groove 4427, thus, by providing a pair of protruding sliding blocks 447, the friction of the spring socket body 4431 sliding on the fixed seat body 4421 can be reduced, the wear of the spring socket body 4431 is reduced, and by providing the recess 448, the air flow generated by the movement of the buckle 4434 in the clamping groove 4425 can be guided to flow to the atmosphere through the groove 4427 and the recess 448, preventing the generation of a reaction force on the buckle 4434 due to air compression in the clamping groove 4425, avoiding the adverse effects on the smooth movement of the buckle 4434.

[0044] Please refer to Figures 4 to 6, specifically, the pump module 4 further comprises several fixed plates 45, for example three, provided with a pair of plate slots 453, each plate slot 453 being fixed with a guide pipe 46, one end of the pair of guide pipes 46 being connected with two end pipe openings of a pump pipe respectively and the other end being connected with the ion selective electrode module 1 and the reagent package module 5 through two liquid pipes respectively, it can be understood that the liquid pipes include a correction liquid pipe and a waste liquid pipe, the mounting bracket 49 is provided with three bracket through holes 491 and a plurality of bracket fixing holes 492, part of the bracket fixing holes 492 being arranged around the bracket through holes 491, the fixed plate 45 being arranged on the corresponding bracket hole, the fixed plate 45 being provided with a plate through hole 451 and a plate fixing hole 452, the plate through hole 451 being partially penetrated by a flange portion of the pump body 471 around the drive shaft 472, the pump body 471 being further provided with a plurality of pump fixing holes 4712, the plurality of seat fixing holes including a pair of first seat fixing holes 4422 and a pair of second seat fixing holes 4423, the fixed seat body 4421 including a pair of recessed portions 44211 obliquely recessed towards the direction of the adjacent clamping slot 4425 by a first circular arc surface 4426 and a pair of fixed columns 44212 respectively opposite to the recessed portions 44211, the first seat fixing hole 4422 being arranged in the fixed column 44212 and communicating with the recessed portion 44211, the second seat fixing hole 4423 being arranged at the lower corners of the fixed seat body 4421, a fixing member being arranged in the opposite plate fixing hole 452 and pump fixing hole 4712, a fixing member being arranged in the opposite first seat fixing hole 4422, plate fixing hole 452 and pump fixing hole 4712 respectively, a fixing member being arranged in the opposite plate fixing hole 452 and bracket fixing hole 492, a fixing member being arranged in the opposite second seat fixing hole 4423 and bracket fixing hole 492. In this embodiment, as shown in the figure, the uppermost pair of fixing members are used to fix the fixed plate 45, the middle pair of fixing members are used to fix the pump body 471, the middle pair of fixing members opposite to the lower part are also used to fix the fixed seat 442, the lowermost pair of fixing members are used to fix the fixed plate 45 and the fixed seat 442, in addition, it should be noted that in this specification, each fixing hole and each fixing member can be a threaded hole and a screw respectively. Therefore, the pump body 471 of each pumping assembly and the corresponding fixed seat 442, fixed plate 45 and spring socket 443 are reliably fixed on the mounting bracket 49.

[0045] Please refer to Figure 2 , specifically, relative to the vertical plane passing through the center axis of the drive shaft 472, the pair of abutting seats 4424, the pair of clamping slots 4425, the pair of accommodating slots 4432, the pair of abutting holes 4433, the pair of buckles 4434, the pair of slotted grooves 4427, the pair of protruding sliding blocks 447, the pair of first seat fixing holes 4422 and the pair of second seat fixing holes 4423 are symmetrically arranged. Therefore, the whole clamping seat assembly has compact structure, reliable connection and high synchronization of the movement of the spring socket 443 relative to the fixed seat 442.

[0046] Reference is made to Figure 7, preferably, the electrolyte detection module further comprises a displacement assembly corresponding to each pumping assembly, the displacement assembly comprising a driving motor (not shown) and a threaded rod (not shown) connected to the driving motor, the driving motor being capable of driving the threaded rod to rotate in a first direction, for example clockwise, and a second direction, for example counterclockwise, respectively, the elastic seat body 4431 is provided with a recess portion 4437 and a connecting portion 4438 opposite to the recess portion 4437, the connecting portion 4438 is provided with a threaded hole (not shown), the driving motor is fixed to the side of the connecting portion away from the recess portion 4437, the threaded rod is threadedly connected to the threaded hole, and the threaded rod is capable of extending and retracting relative to the recess portion 4437, specifically, when the threaded rod drives the elastic seat body 4431 to move towards the corresponding pump tube, i.e. to apply an increasing force to the corresponding pump tube, the length of the threaded rod extending into the recess portion 4437 decreases, i.e. the threaded rod retracts relative to the recess portion 4437, and when the threaded rod drives the elastic seat body 4431 to move away from the corresponding pump tube, i.e. to apply a decreasing force to the corresponding pump tube, the length of the threaded rod extending into the recess portion 4437 increases, i.e. the threaded rod extends relative to the recess portion 4437. The reagent pack module is provided with a first flow rate detector and a second flow rate detector for detecting the flow rates of the first and second calibration solutions respectively, and a third flow rate detector for detecting the flow rate of the waste solution, each flow rate detector can be a flow rate detector commonly used in the art, it is known that each driving motor and each flow rate detector can correspondingly communicate with each other through wireless or wired means, and each driving motor generates a control signal according to the communication data, or each driving motor and each flow rate detector can communicate with the controller of the biochemical analyzer through wireless or wired means, and the controller generates a control signal for controlling the operation of each driving motor according to the communication data. The driving motor controls the rotation direction and the number of rotations of the threaded rod according to the flow rate detection value of the liquid pumped by the corresponding pumping assembly detected by the corresponding flow rate detector, so that the threaded rod drives the elastic seat body 4431 to move along or against the direction of the elastic force to adjust the elastic abutting force applied by the elastic seat to the corresponding pump tube, specifically, when the flow rate detection value is less than a first preset flow rate value, it may be due to occasional factors such as manufacturing errors of the elastic member, installation errors of the elastic member, or installation errors of the pump tube, causing the elastic abutting force of the pump tube to be too large, so that the driving motor outputs a rotation force in the first direction to drive the threaded rod to move the elastic seat body 4431 a certain distance in a direction opposite to the elastic force of the elastic member, so as to reduce the effect of the elastic abutting force on the pump tube, so that the flow rate detection value meets the preset flow rate value.Conversely, when the flow rate detection value is greater than the second preset flow rate value, generally, the second preset flow rate value is greater than the first preset flow rate value by a preset percentage, it is also possible that due to the above-mentioned incidental factors, the elastic abutting force of the pump pipe is too small, so that the threaded rod drives the elastic socket body 4431 to move a certain distance in the direction parallel to the elastic force of the elastic member by the rotating force output by the driving motor in the second direction, so as to increase the elastic abutting force of the pump pipe, so that the flow rate detection value meets the second preset flow rate value. Therefore, by setting a displacement assembly capable of adjusting the elastic abutting force of the corresponding pump pipe for each pumping assembly, the abnormal flow rate caused by the excessive or insufficient elastic abutting force due to incidental factors can be avoided, and the stability and uniformity of the corresponding pump pipe in conveying liquid can be further ensured. Please refer to. Figure 1 、 Figure 3 、 Figure 4 and Figure 10, specifically, the mounting bracket 49 comprises a first mounting plate 493, a second mounting plate 494, a third mounting plate 495 and a fourth mounting plate 496, the first mounting plate 493 extends in a horizontal direction, the second mounting plate 494 comprises a connecting branch 4941, a fixing branch 4942 and a bent branch 4943, the connecting branch 4941 is connected to the front edge of the first mounting plate 493 in a vertical upward extending manner, the fixing branch 4942 is connected to the connecting branch 4941 and extends in a direction of the first mounting plate 493 in an acute angle, so as to facilitate the observation of the running state of each pumping assembly. In addition, preferably, the acute angle is specifically 45°, and each pumping assembly is vertically mounted on the first mounting plate 493. The bent branch 4943 is connected to the inclined end edge of the fixing branch 4942, and the bent branch 4943 and the fixing branch 4942 form an obtuse angle therebetween. The third mounting plate 495 is connected to the side edge of the first mounting plate 493 and extends in a vertical upward manner. The fourth mounting plate 496 is connected to the extended end of the third mounting plate 495 and extends in a direction away from the bent branch 4943. The third mounting plate 495 is provided with a socket 4951, and the side edge of the bent branch 4943 is provided with an insertion block 49431 which is inserted and fixed in the socket 4951. Therefore, the entire mounting bracket is stable and reliable, and simple to process. The third mounting plate 495 and the fourth mounting plate 496 are both provided with plate holes 497 corresponding to the shell holes of the shell 11. The corresponding plate holes 497 and the shell holes are fixedly connected by fixing members. Therefore, the pump module 4 and the ion selective electrode module 1 are stably connected and fixed together, and the stability of their work is improved. The first mounting plate 493 is provided with a flap 4932 having a locking hole 4931. The mounting bracket 49 is preferably made of metal material. A metal locking member (not shown) is fixed in the locking hole 4931 to lock the mounting bracket 49 in position and to ground the mounting bracket 49 and the shell 11 together. The common grounding should be directly connected to the main grounding point of the biochemical analyzer. The locking hole 4931 can be a threaded hole, and the metal locking member can be a metal screw. Since the electrolyte detection module using ISE is very important for electrical grounding. When static electricity is discharged into the liquid, these voltage spikes will polarize the electrode 12 and cause a large drift. At this time, it may take a long time for the electrode 12 to return to normal. Moreover, due to the high impedance characteristic of the electrode 12, noise spikes from the ground or power supply can easily infect the voltage signal of the sensor. Even a slight voltage spike can affect the detection result. Therefore, by grounding the mounting bracket 49 and the shell 11 together, the ion selective electrode module 1 and the pump module 4 are both grounded, so that the above-mentioned various adverse conditions caused by the static electricity discharged into the liquid do not occur.

[0047] As another purpose, a biochemical analyzer is provided, which comprises any one of the above electrolyte detection modules, the electrolyte detection module can be assembled in the biochemical analyzer as a customized module, and the electrolyte detection module and the host of the biochemical analyzer can communicate through a serial port, the biochemical analyzer has the beneficial technical effects brought by any one of the above electrolyte detection modules, which will not be described here, so that the biochemical analyzer has the advantages of high detection accuracy and high reliability.

[0048] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A biochemical analyzer having an ion-selective electrode module, characterized by comprising: The electrolyte detection module comprises: An ion-selective electrode module comprising a housing and a plurality of mutually sealed and closely attached electrodes arranged in the housing, an electrode channel being formed between each of the electrodes; A sampling cell arranged above the ion-selective electrode module, the sampling cell being provided with a first liquid inlet, a second liquid inlet and a sample inlet capable of receiving a sample to be detected; A liquid detection cartridge arranged between the sampling cell and the ion-selective electrode module, the sampling cell being connected to the electrode channel via the liquid detection cartridge, the liquid detection cartridge detecting the state of the liquid located therein; A pump module comprising a first pumping assembly, a second pumping assembly and a third pumping assembly; A reagent pack module comprising a first reagent pack storing a first calibration liquid, a second reagent pack storing a second calibration liquid and a waste liquid piece for receiving waste liquid, the liquid outlet of the first reagent pack being connected to the first liquid inlet via a first pump tube of the first pumping assembly, the liquid outlet of the second reagent pack being connected to the second liquid inlet via a second pump tube of the second pumping assembly, and the waste liquid outlet of the ion-selective electrode module located downstream of the electrode channel being connected to the waste liquid inlet of the waste liquid piece via a third pump tube of the third pumping assembly, the first calibration liquid, the second calibration liquid and the sample to be detected being capable of passing through the electrode channel under the action of different pumping assemblies, each pumping assembly comprising a clamping seat assembly elastically abutting the first pump tube, the second pump tube and the third pump tube, respectively; The pump module further comprises a mounting bracket for mounting each pumping assembly, each pumping assembly comprising a peristaltic pump and a rotating assembly, the peristaltic pump driving the rotating assembly to rotate, the clamping seat assembly comprising an elastic member, a fixed seat and a spring socket, the fixed seat comprising a fixed seat body and a plurality of seat fixing holes arranged on the fixed seat body, a pair of abutting seats, a pair of clamping grooves and a first circular surface, the spring socket comprising a spring socket body and a pair of accommodating grooves, a pair of abutting holes, a pair of buckles and a second circular surface arranged on the spring socket body, the abutting holes being arranged at the top of the accommodating grooves, the elastic member being arranged in the accommodating grooves, the elastic member being elastically deformed between the pair of abutting seats and the abutting holes, the buckles and the clamping grooves being pairedly clamped and matched, the spring socket being capable of moving up and down in the vertical direction under the elastic force of the elastic member to exert an elastic abutting force on the corresponding pump tube located between the second circular surface and the rotating assembly, so that the corresponding pump tube stably and uniformly transports liquid under the rotating force of the rotating assembly. ​ The electrolyte detection module further comprises a shift assembly corresponding to each pumping assembly, the shift assembly comprising a driving motor and a threaded rod connected with the driving motor, the driving motor being capable of driving the threaded rod to rotate in a first direction and a second direction respectively, the elastic socket body being provided with a recess portion and a connecting portion opposite to the recess portion, the connecting portion being provided with a threaded hole, the driving motor being fixed on a side of the connecting portion away from the recess portion, the threaded rod being threadedly connected in the threaded hole, the threaded rod being capable of extending and retracting relative to the recess portion, the reagent pack module being provided with a first flow rate detector and a second flow rate detector for detecting flow rates of first and second calibration liquids respectively and a third flow rate detector for detecting a flow rate of waste liquid, the driving motor corresponding to the pumping assembly being capable of controlling a rotating direction and a rotating number of the threaded rod according to a flow rate detection value of the liquid pumped by the corresponding pumping assembly and detected by the corresponding flow rate detector, so that the threaded rod drives the elastic socket body to move along or against the elastic force direction, thereby adjusting the elastic abutting force of the elastic socket of the corresponding clamping seat assembly on the corresponding pump tube.

2. The biochemical analyzer with the ion-selective electrode module according to claim 1, characterized by The abutting seat comprises a convex plate with a circular-arc convex surface and a convex block with a circular-arc concave surface provided on the convex plate, the accommodating groove has a groove arc surface, the circular-arc convex surface abuts against the groove arc surface in a matched manner, and the abutting hole is a circular through hole, in the vertical direction, a projection edge of the circular-arc concave surface overlaps a projection edge of the abutting hole.

3. The biochemical analyzer with the ion-selective electrode module according to claim 1, characterized by The peristaltic pump comprises a pump body and a driving shaft, the rotating assembly comprises a rotating disc, a plurality of rotating roller assemblies and an end cover, the rotating disc is provided with a disc hole passing through a center line thereof and a plurality of disc through holes same in number as the rotating roller assemblies and uniformly distributed around the disc hole, the rotating roller assembly comprises a plug post and a roller cylinder, the roller cylinder is provided with a cylinder through hole, one end of the plug post is fixed in the disc through hole and the other end thereof protrudes and is inserted in the cylinder through hole, the plurality of roller cylinders of each rotating assembly are tangent to a common outer circle, and each roller cylinder acts on the pump tube in a sequential and reciprocating rotating manner to provide a liquid flow force, the end cover comprises a circular cover main body and a convex column extending along a center axis of the circular cover main body and provided with a column hole, the driving shaft is fixed through the disc hole and the column hole, a diameter value of the circular cover main body and an outer diameter value of the rotating disc are both greater than a diameter value of the common outer circle, the end cover is opposite to a clearance of free end portions of the plug posts, the rotating disc and the first circular-arc surface have a common center and a circumferential surface spacing therebetween, and a radial distance value between the rotating disc and the first circular-arc surface is greater than a tube diameter value of the pump tube acted on by the roller cylinder.

4. The biochemical analyzer with the ion-selective electrode module according to claim 3, characterized by The fixed seat body is provided with a pair of grooves respectively communicated with the clamping grooves, the grooves are located above the clamping grooves and extend in the vertical direction, one groove vertical surface of the groove is connected with one groove vertical surface of the clamping groove, in the horizontal direction, the width of the groove is greater than the width of the clamping groove, the fixed seat is also provided with a protruding table protruding towards the clamping groove below the groove, the protruding table is provided with a clamping guide surface inclined from the groove to the clamping groove, the buckle is inserted into the groove and elastically deformedly clamped into the clamping groove under the guidance of the clamping guide surface, the buckle can move in the length direction of the clamping groove in the vertical direction, a pair of arc convex ribs are also arranged on the second arc surface of the elastic socket body, a pair of arc convex ribs are located in the radial direction and limit the pump pipe therebetween.

5. The biochemical analyzer with the ion-selective electrode module according to claim 4, characterized by A pair of protruding sliding blocks are arranged on the surface of the elastic socket body facing the fixed seat body, the protruding sliding blocks are in the shape of a rectangular parallelepiped in the vertical direction, a recess is arranged in the protruding sliding block, in the clamping and clamping cooperation state of the buckle and the clamping groove, the elastic socket body and the fixed seat body are mutually attached, the protruding sliding blocks correspondingly slide on the outer sides of the adjacent grooves and clamping grooves of the fixed seat body, and the recess is communicated with the groove.

6. The biochemical analyzer with the ion-selective electrode module according to claim 5, characterized by The pump module also includes several fixed plates, the fixed plates are provided with a pair of plate grooves, each plate groove clamps a guide pipe, one end of a pair of guide pipes is connected with two end pipe openings of a pump pipe and the other end is connected with an ion selective electrode module and a reagent package module through two liquid pipelines, three rack through holes and a plurality of rack fixing holes are arranged on the mounting bracket, the fixed plates are arranged on the corresponding rack fixing holes, the fixed plates are provided with plate through holes and plate fixing holes, the plate through holes are used for the partial penetration of the protruding lug portion of the pump body around the drive shaft, the pump body is also provided with a plurality of pump fixing holes, the plurality of seat fixing holes include a pair of first seat fixing holes and a pair of second seat fixing holes, the fixed seat body includes a pair of recesses recessed towards the direction of the adjacent clamping groove at an angle of the first arc surface and a pair of fixed columns respectively facing away from the recesses, the first seat fixing holes are arranged in the fixed columns and communicated with the recesses, the second seat fixing holes are arranged at the lower corners of the fixed seat body, a fixing member is arranged in the opposite plate fixing holes and pump fixing holes, a fixing member is arranged in the opposite first seat fixing holes, plate fixing holes and pump fixing holes, a fixing member is arranged in the opposite plate fixing holes and rack fixing holes, and a fixing member is arranged in the opposite second seat fixing holes and rack fixing holes; relative to the vertical plane passing through the center axis of the drive shaft, the pair of abutting seats, the pair of clamping grooves, the pair of containing grooves, the pair of abutting holes, the pair of buckles, the pair of grooves, the pair of protruding sliding blocks, the pair of first seat fixing holes and the pair of second seat fixing holes are symmetrically arranged.

7. The biochemical analyzer with the ion-selective electrode module according to claim 1, characterized by The biochemical analyzer further comprises a controller, the driving motor and the flow rate detectors can communicate with the controller through wireless or wired mode, and the controller can generate a control signal for controlling the driving motor according to the communication data; when the flow rate detection value is less than a first preset flow rate value, the control signal can control the driving motor to output a rotating force rotating in the first direction, so that the threaded rod drives the elastic socket body to move a certain distance in a parallel and opposite direction of the elastic force of the elastic member, so that the flow rate detection value meets the preset flow rate value; when the flow rate detection value is greater than a second preset flow rate value, the control signal can control the driving motor to output a rotating force rotating in the second direction, so that the threaded rod drives the elastic socket body to move a certain distance in a direction parallel to the elastic force of the elastic member, so that the flow rate detection value meets the preset flow rate value; wherein the second preset flow rate value is greater than the first preset flow rate value by a preset percentage.

8. The biochemical analyzer with ion selective electrode module according to any one of claims 1 to 7, characterized in that, The mounting bracket comprises a first mounting plate, a second mounting plate, a third mounting plate and a fourth mounting plate, the first mounting plate extends in a horizontal direction, the second mounting plate comprises a connecting branch, a fixed branch and a bent branch, the connecting branch is connected to the front edge of the first mounting plate and extends upward, the fixed branch is connected to the connecting branch and extends in a direction inclined at an acute angle to the first mounting plate, the bent branch is connected to the inclined end edge of the fixed branch, the bent branch and the fixed branch form an obtuse angle, the third mounting plate is connected to the side edge of the first mounting plate and extends upward, the fourth mounting plate is connected to the extended end of the third mounting plate and extends in a direction away from the bent branch, the bent branch is parallel to the fourth mounting plate, a socket is arranged on the third mounting plate, a plug is arranged on the side edge of the bent branch and is inserted into the socket, the third mounting plate and the fourth mounting plate are both provided with plate holes corresponding to the shell holes of the shell, the corresponding plate holes and shell holes are fixedly connected by fixing members, the first mounting plate is provided with a tab having a locking hole, and the mounting bracket is locked in position by a metal locking member fixed in the locking hole, and the mounting bracket and the shell are commonly grounded.

Images