Electrode holder fixing device for electrolyte analyzer

Abstract

An electrode holder fixing device for an electrolyte analyzer relates to the technical field of medical detection equipment. It solves the technical deficiencies of the unreasonable structural design of existing fixing devices and the inconvenience of disassembling and assembling each electrode module. The technical solution adopted includes: a fixing seat, a detection base and a fixing portion are respectively provided at both ends of the head end. An electrode cabin for sequentially movably arranging and clamping the indicator electrode module and the reference electrode module is formed between the detection base and the fixing portion. A detector is connected to the detection base, and a locking push rod mechanism is provided on the fixing portion. The action end of the locking push rod mechanism elastically presses against the reference electrode module to lock and fix each electrode module and dock with the detector, and enables the detector, the indicator electrode module, the reference electrode module, and the liquid paths provided on the action end of the locking push rod mechanism to be docked and connected. The present invention elastically locks and fixes each electrode module in the electrode cabin through the locking push rod mechanism. It has a simple structure and a reasonable design, can realize convenient disassembly and assembly of each electrode module, and is easy to operate and maintain.

Description

Technical Field

[0001] The present invention relates to the technical field of medical detection equipment, and more particularly to an electrode seat fixing device used in an electrolyte analyzer. Background Art

[0002] Electrolyte analyzers are mainly used to measure the concentrations of potassium ions, sodium ions, chloride ions, calcium ions, lithium ions, etc. in the sample liquid to be tested. They are one of the main tools for evaluating the human body's internal environment and are widely used in clinical testing.

[0003] Electrolyte analyzers primarily utilize three to five indicator electrode modules (including potassium, sodium, chloride, calcium, and lithium) to detect the concentration of various ions in the sample fluid based on the principles of ion selection and ionic conductivity. A reference electrode module provides a common reference potential for calibration of the values ​​of the other indicator electrode modules. A sample detector is typically installed before the indicator electrode module to detect the presence of air in the sample fluid, preventing air from entering and affecting test accuracy.

[0004] Each indicator electrode module converts the ion concentration it detects into different electrical signals. These electrical signals are amplified and sequentially converted into digital signals through a time-division multiplexer. The digital signals are then sent to the microprocessor unit of the main control module for signal analysis, processing and calculation. Finally, the test result data is output and displayed on a display screen, or the test results can be printed on a printer.

[0005] As a precision measuring instrument, the electrolyte analyzer needs to be cleaned and maintained daily to maintain the normal operation of each electrode module. Under the influence of various factors such as untimely cleaning, excessive use time, or the type of sample liquid being tested, each electrode module is prone to failures such as liquid path blockage and deviation in test results, and the electrode module needs to be disassembled for cleaning or replacement. In addition, according to the different types of sample liquids being tested and the actual test project requirements, it may be necessary to change the type of indicator electrode module or adjust the arrangement order of each indicator electrode module during use, which also requires the electrode module to be disassembled, replaced or reorganized. For this reason, the electrode modules in the electrolyte analyzer are usually assembled detachably through the electrode holder fixing device. The structure of the electrode holder fixing device in the existing analyzer is relatively complex, and the internal space of the analyzer is already small, which makes the disassembly and assembly of the electrode module cumbersome and inconvenient to use, affecting the detection efficiency and detection reliability.

[0006] Therefore, it is necessary to improve the electrode holder fixing device in the existing electrolyte analyzer to solve the above problems. Summary of the Invention

[0007] To sum up, the purpose of the present invention is to solve the technical deficiencies of the electrode holder fixing device in the existing electrolyte analyzer, such as unreasonable structural design, complex structure, inconvenient operation, and inconvenience in disassembly and assembly of the electrode module, and to provide an electrode holder fixing device for use in an electrolyte analyzer, which has a simpler and more reasonable structural design, is more convenient to operate, and can realize rapid disassembly and assembly of the electrode module.

[0008] In order to solve the technical deficiencies proposed by the present invention, the technical solution adopted is a device for fixing an electrode holder of an electrolyte analyzer, characterized in that it includes:

[0009] A fixing seat, the front end of which is provided with a detection base for fixing the detector, and the rear end is provided with a fixing portion, and an electrode cabin for sequentially arranging and clamping the indicator electrode module and the reference electrode module is formed between the detection base and the fixing portion; the detector is provided with a first liquid path, the indicator electrode module is provided with a second liquid path, and the reference electrode module is provided with a third liquid path, and the first liquid path, the second liquid path and the third liquid path can be sequentially connected end to end in a sealed manner within the electrode cabin;

[0010] The locking push rod mechanism is fixed on the fixed part, and a fourth liquid circuit is provided on its action end, which can elastically press against the reference electrode module and push the indicating electrode module in sequence to dock the detector under the limit of the detection base, thereby locking and fixing each electrode module and the detector in sequence as a whole, and making the fourth liquid circuit, the third liquid circuit, the second liquid circuit and the first liquid circuit sealed and docked and connected.

[0011] Furthermore, the locking push rod mechanism includes:

[0012] The guide seat is a hollow cylindrical structure, which is longitudinally fixed to the fixing portion, and one side of the cylindrical wall is provided with an arc-shaped groove extending around its axis;

[0013] The pressure seat is movably located in the guide seat and coaxial therewith, and a pressure rod is radially connected to the side wall of the head end thereof and extends outward from the guide seat through the arc-shaped groove. A push rod through-hole is penetrated through the axis of the pressure seat, and a locking push rod is movably inserted into the push rod through-hole via an elastic connection structure. The fourth fluid path is penetrated and opened on the axis of the locking push rod.

[0014] Under normal circumstances, the head end of the locking push rod can automatically extend outward from the head end of the pressure seat under the elastic force of the elastic connection structure; when the pressure rod moves to the head end of the arc groove, the pressure seat is located at its forward limit position and drives the head end of the locking push rod to elastically press against the reference electrode module; when the pressure rod moves to the tail end of the arc groove, the pressure seat is located at its backward limit position and drives the head end of the locking push rod to separate from the reference electrode module.

[0015] Furthermore, the elastic connection structure includes:

[0016] The spring chamber is provided in the pressure seat, and the push rod through hole passes through the axis of the spring chamber and is in communication with the spring chamber;

[0017] An anti-slip portion is radially arranged on the locking push rod and is movable in the spring cavity, and its outer circumference is larger than the inner diameter of the push rod through hole;

[0018] The pressure spring is elastically accommodated in the spring cavity and movably sleeved on the locking push rod. Under normal circumstances, its head end elastically abuts against the anti-slip portion, and its tail end elastically abuts against the rear end of the spring cavity to elastically push the anti-slip portion to the front end of the spring cavity, so as to drive the head end of the locking push rod to automatically and elastically extend outward from the head end of the pressure seat.

[0019] Furthermore, the spring cavity includes:

[0020] An inner groove is longitudinally concave along the rear end surface of the pressure seat and is coaxial therewith;

[0021] The pressure seat cover is detachably fixedly connected to the rear end surface of the pressure seat to block the inner groove, and the push rod through hole is located on its axis and passes through its body.

[0022] Furthermore, the locking push rod mechanism also includes:

[0023] The locking and positioning structure is arranged between the guide seat and / or the pressure seat and / or the pressure rod, and is used to fix the pressure rod at the head end of the arc groove to prevent the pressure seat from rotating back under the elastic force of the elastic connection structure.

[0024] Preferably, the locking and positioning structure includes:

[0025] The locking opening is arranged at the rear side of the head end of the arc-shaped groove and is used for locking the pressure rod to prevent it from retreating along the arc-shaped groove.

[0026] In addition, preferably, the locking and positioning structure includes:

[0027] The locking portion is threadedly connected to the pressure rod and is movably located outside the cylinder wall of the guide seat. Its position can be adjusted along the axial direction of the pressure rod to tightly abut against the cylinder wall of the guide seat to lock the pressure seat.

[0028] Furthermore, the fixing seat includes:

[0029] The back plate is vertically arranged, and the detection base and the fixing part are detachably fixedly connected to the front and rear ends of the front side wall thereof;

[0030] The guide clamping optical axis is horizontally and longitudinally fixedly connected between the detection base and the lower part of the fixed part. The indicator electrode module and the reference electrode module are arranged longitudinally and movably in sequence and clamped on it, which plays the role of supporting and limiting the guiding of each electrode module.

[0031] Furthermore, the indicator electrode module and the reference electrode module both include:

[0032] The electrode holder can be matched and docked at both ends, and a slide groove is longitudinally provided at the bottom for movably clamping the guide clamping optical axis. An electrode chamber is vertically provided at the top and is vertically connected to the second liquid path or the third liquid path. An inner electrode is detachably connected to the electrode chamber, and the electrical contact of the inner electrode extends to the outside of the upper end of the electrode holder.

[0033] Furthermore, the tail end of the reference electrode module is provided with a stop-fitting groove for movably engaging the action end of the locking ejector mechanism, and the third fluid path is located on the axis of the stop-fitting groove and passes through it.

[0034] The beneficial effects of the present invention are:

[0035] The fixing device of the present invention elastically presses against the reference electrode module by locking the action end of the push rod mechanism, thereby sequentially pushing the indicator electrode modules through the reference electrode module, and sequentially locking and fixing the electrode modules into one piece under the limiting action of the detection base, and enabling the indicator electrode module at the head end to accurately dock with the detector, thereby enabling the fourth liquid path, the third liquid path, the second liquid path, and the first liquid path to be sealed and docked and connected in sequence from end to end. The fixing device of the present invention has a reasonable structure, ingenious design, and simple structure, which can realize convenient disassembly and assembly of the electrode modules in the electrode cabin, and reliable connection, thereby ensuring the reliability of the analyzer operation and the accuracy of detection.

[0036] Moreover, the locking push rod mechanism of the fixing device of the present invention has an actuating end that drives the reference electrode module to move toward the side of the indicating electrode module in a non-rigid elastic pushing manner, and can automatically adapt to the distance between the reference electrode module and the locking push rod mechanism, thereby improving the reliability of locking and fixing each electrode module, reducing hard damage to the reference electrode module, and increasing the service life of the electrode module; moreover, the elastic abutment connection method can make the axial pressure output by the actuating end of the locking push rod mechanism more stable and balanced, thereby ensuring the reliability of the sealed connection between the fourth liquid path and the third liquid path, reducing the failure rate of the analyzer, and improving the efficiency of the detection work.

[0037] In addition, the fourth liquid circuit is arranged on the action end of the locking ejector mechanism, which ensures the docking and connectivity of each liquid circuit while achieving the locking and fixation of the electrode module. The structural design is ingenious and easy to use, which is conducive to subsequent detection operations and realizes the quick disassembly and quick installation of each electrode module, which is conducive to improving detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the structure of the device of the present invention for locking and fixing each electrode module;

[0039] Figure 2 This is a schematic diagram of the overall structure of the device and each electrode module of the present invention;

[0040] Figure 3 This is a cross-sectional view of the overall structure of the device of the present invention, in which each electrode module is locked and fixed;

[0041] Figure 4 This is a schematic diagram of the overall structure of the locking ejector mechanism of the present invention;

[0042] Figure 5 This is a cross-sectional view of the overall structure of the locking ejector mechanism of the present invention;

[0043] Figure 6 It is a structural schematic diagram of one embodiment of the locking and positioning structure of the locking ejector mechanism of the present invention;

[0044] Figure 7 It is a structural schematic diagram of another embodiment of the locking and positioning structure of the locking ejector mechanism of the present invention;

[0045] Figure 8 This is a schematic diagram of the overall structure of the indicator electrode module fixed to the device of the present invention;

[0046] Figure 9 Schematic diagram of the overall structure of the reference electrode module fixed on the device of the present invention.

[0047] In the figure: 1. Fixing seat, 11. Electrode cabin, 111. First fixing hole, 112. Second fixing hole, 12. Back plate, 13. Guide clamping optical axis, 2. Detection base, 21. First part, 22. Second part, 3. Fixing part, 31. Fixing part through hole, 4. Locking ejector mechanism, 41. Fourth fluid path, 42. Guide seat, 421. Connecting seat, 422. Guide seat through hole, 423. Arc groove, 424. Positioning port, 43. Pressure seat, 431. Threaded connection hole, 432. Ejector through hole, 433. Inner groove, 434. Fixing screw hole, 44. Pressure rod, 45. Lock Tightening push rod, 451. Anti-slip part, 452. Push rod liquid outlet pipe, 46. Pressure spring, 47. Pressure seat cover, 48. Locking part, 5. Indicator electrode module, 51. Second liquid path, 52. First electrode seat, 53. First slide groove, 54. First electrode chamber, 55. First inner electrode, 551. First electrical contact, 6. Reference electrode module, 61. Third liquid path, 62. Second electrode seat, 63. Second slide groove, 64. Second electrode chamber, 65. Second inner electrode, 651. Second electrical contact, 66. Stop fitting groove, 7. Detector, 71. First liquid path, 72. Detector liquid inlet pipe. DETAILED DESCRIPTION

[0048] The structure of the present invention will be further described below in conjunction with the accompanying drawings and preferred specific embodiments of the present invention.

[0049] Reference Figures 1 to 3 As shown, the present invention provides an electrode holder fixing device for an electrolyte analyzer, which is characterized by comprising a fixing seat 1, a detection base 2, a fixing portion 3 and a locking ejector rod mechanism 4.

[0050] Specifically, the fixing seat 1 is arranged longitudinally, and the detection base 2 and the fixing part 3 are detachably threadedly fixed at the head and tail ends of the front side of the fixing seat 1 by screws or bolts respectively. The space between the detection base 2 and the fixing part 3 of the fixing seat 1 constitutes an electrode cabin 11 for sequentially arranging and clamping at least three indicator electrode modules 5 and one reference electrode module 6.

[0051] Specifically, the detection base 2 has an overall cubic structure, including a first part 21 and a second part 22 that can be fixedly connected as one. A detector 7 is detachably clamped and fixed longitudinally between the first part 21 and the second part 22. A first liquid path 71 for the passage of the sample liquid to be detected or the cleaning liquid, reference liquid and other liquids is provided through the axis of the detector 7. The front end of the detector 7 is fixedly connected to a detector liquid inlet pipe 72 that is connected to the first liquid path 71.

[0052] Specifically, the fixing part 3 is a cubic structure as a whole, and is detachably threadedly fixed to the tail end of the fixing base 1 by a screw or bolt and is opposite to the detector 7. A fixing part through hole 31 is longitudinally penetrated at the position corresponding to the first liquid path 71.

[0053] Specifically, each indicator electrode module 5 and reference electrode module 6 is movably arranged in sequence from left to right in the electrode cabin 11. Each indicator electrode module 5 is provided with a second liquid path 51 longitudinally running through its left and right end surfaces at the position corresponding to the first liquid path 71, for the passage of the sample liquid to be tested, or the cleaning liquid, the reference liquid, etc.; a third liquid path 61 is provided longitudinally running through its left and right end surfaces at the position corresponding to the second liquid path 51 of the reference electrode module 6; the right end surface of the detector 7 and the left end surface of each indicator electrode module 5 can be interlocked and spliced ​​with each other, the right end surface of each indicator electrode module 5 and the left end surface of the reference electrode module 6 can be interlocked and spliced ​​with each other, and the left and right end surfaces of each indicator electrode module 5 can be interlocked and spliced ​​with each other, thereby ensuring that the first liquid path 71, the second liquid path 51 and the third liquid path 61 after being interlocked and spliced ​​in sequence can be sealed and connected end to end.

[0054] Preferably, the device of the present invention has five indicator electrode modules 5, and the type of each indicator electrode module 5 can be selected between potassium ion detection electrode module, sodium ion detection electrode module, chloride ion detection electrode module, calcium ion detection electrode module, lithium ion detection electrode module or pH detection electrode module according to actual detection needs, and the arrangement order between the selected indicator electrode modules 5 needs to be adjusted according to corresponding regulations based on actual detection requirements.

[0055] Specifically, the locking ejector mechanism 4 is longitudinally fixedly connected to the right end surface of the fixed portion 3 , and a fourth liquid path 41 corresponding to the first liquid path 71 , the second liquid path 51 and the third liquid path 61 is longitudinally opened through the action end of the locking ejector mechanism 4 .

[0056] During actual use, the action end of the locking push rod mechanism 4 can longitudinally pass through the fixed part through hole 31 and elastically press against the reference electrode module 6, so that the five indicator electrode modules 5 are pushed in sequence in the electrode cabin 11 through the reference electrode module 6, and under the limiting action of the detection base 2, the indicator electrode module 5 located on the far left is driven to be spliced ​​with the detector 7, so that each electrode module and the detector 7 are locked and fixed as a whole in sequence, and the fourth liquid path 41, the third liquid path 61, the second liquid path 51 and the first liquid path 71 are sealed and connected end to end.

[0057] It should be noted that the mounting base 1 of the fixture of the present invention is designed to accommodate and secure five indicator electrode modules 5. This design maximizes adaptability to diverse body fluid testing requirements and can detect up to five body fluid ion indicators. If fewer than five items are actually tested, a replacement indicator electrode module with the same structure can be used.

[0058] After adopting the above technical solution, the present invention has the following beneficial effects.

[0059] The fixing device of the present invention elastically presses against the reference electrode module 6 by locking the action end of the push rod mechanism 4, thereby sequentially pushing each indicator electrode module 5 in the motor compartment 11 through the reference electrode module 6, so that each electrode module is sequentially locked and fixed as a whole under the limiting action of the detection base 2, and the indicator electrode module 5 at the head end can be accurately docked with the detector 7, thereby making the fourth liquid path 41, the third liquid path 61, the second liquid path 51 and the first liquid path 71 sealed and docked in sequence. The fixing device of the present invention has a reasonable structure, ingenious design, and simple structure, which can realize the convenient disassembly and assembly of each electrode module in the electrode compartment, and the connection is reliable, ensuring the reliability of the analyzer operation and the accuracy of the detection.

[0060] Moreover, the locking push rod mechanism 4 of the fixing device of the present invention has an actuating end that drives the reference electrode module 6 to move toward the side of the indicating electrode module 5 in a non-rigid elastic pushing manner, and can automatically adapt to the distance between the reference electrode module 6 and the locking push rod mechanism 4, thereby improving the reliability of locking and fixing each electrode module, reducing hard damage to the reference electrode module 6, and increasing the service life of the electrode module; moreover, the elastic abutment connection method can make the axial pressure output by the actuating end of the locking push rod mechanism more stable and balanced, thereby ensuring the reliability of the sealed connection between the fourth liquid path and the third liquid path, reducing the failure rate of the analyzer, and improving the efficiency of the detection work.

[0061] In addition, the fourth liquid circuit 41 is arranged on the action end of the locking push rod mechanism 4, which ensures the docking and connectivity of each liquid circuit while achieving the locking and fixation of each electrode module. The structural design is ingenious and easy to use, which is conducive to subsequent detection operations, and realizes the quick disassembly and quick installation of each electrode module, which is conducive to improving detection efficiency.

[0062] As a further improved technical solution adopted by the present invention to solve the technical problem raised, it also includes the following technical features.

[0063] Further, refer to Figure 4 and Figure 5 As shown, the locking push rod mechanism 4 of the electrode seat fixing device of the present invention includes a guide seat 42, a pressure seat 43, a pressure rod 44 and a locking push rod 45.

[0064] Preferably, the guide seat 42 is designed as a hollow cylindrical structure with an open right end, and is longitudinally fixedly connected to the right end surface of the fixing portion 3 via a connecting seat 421 provided at its left end. A guide seat through hole 422 is provided between the guide seat 42 and the connecting seat 421 and is coaxially connected to the fixing portion through hole 31.

[0065] Specifically, an arcuate groove 423 extending around its axis is provided on the front side wall of the guide seat 42 , the head end of the arcuate groove 423 is located on the upper left side wall of the guide seat 42 , and the tail end of the arcuate groove 423 is located on the lower right side wall of the guide seat 42 .

[0066] Preferably, the pressure seat 43 is designed as a cylindrical structure that matches the inner cavity of the guide seat 42, and is movable in the guide seat 42 and can fit therewith, and the two are on the same axis.

[0067] Specifically, a threaded connection hole 431 is provided on the side wall of the head end of the pressure seat 43, and the pressure rod 44 is radially threadedly fixed to the pressure seat 43 through the arc groove 423 and the threaded connection hole 431, and the main body of the pressure rod 44 passes through the arc groove 423 and extends radially outward from the guide seat 42.

[0068] Specifically, a push rod through hole 432 is provided on the axis of the pressure seat 43, and the locking push rod 45 is movably inserted into the push rod through hole 432 through an elastic connection structure and is elastically connected to the pressure seat 53, and the fourth liquid path 41 is provided on the axis of the locking push rod 45.

[0069] Under normal conditions, the head end of the locking push rod 45 can automatically extend outward from the head end of the pressure seat 43 (ie, to the side of the electrode capsule 11 ) under the elastic force of the elastic connection structure.

[0070] When the user manually moves the pressure rod 44 along the arc groove 423 to the head end on the left side of the arc groove 423, the pressure seat 43 moves to its forward limit position in a clockwise deflection manner, thereby driving the head end of the locking push rod 45 through the guide seat through hole 422 and the fixed through hole through the pressure seat 43 and the elastic connection structure to elastically press against the reference electrode module 6, so as to apply an axial elastic force to each electrode module, thereby realizing axial locking and fixation of each electrode module and the detector 7, and making the fourth liquid path 41, the third liquid path 61, the second liquid path 51 and the first liquid path 71 sealed and connected.

[0071] When the user manually moves the pressure rod 44 along the arc groove 423 to the tail end on the right side of the arc groove 423, the pressure seat 43 moves to its rearward limit position in a counterclockwise deflection, thereby driving the head end of the locking push rod 45 to reversely disengage from the reference electrode module 6, thereby releasing the axial force on each electrode module, making it convenient for the user to disassemble the electrode module for cleaning, replacement or sequential adjustment.

[0072] The locking push rod mechanism 4 of the device of the present invention has a simple structure and ingenious design. In a narrow space, it can utilize the arc groove 423 on the guide seat 42, the pressure rod 44 matched with the arc groove 423 and the pressure seat 43 matched with the guide seat 42 to combine the cylindrical spiral angle with the external force of the pressure rod 44 to produce an axial pushing method to realize pressure loading and unloading, thereby realizing the elastic locking and fixing function of the locking push rod 45 on the electrode module, so that the device of the present invention can realize the quick disassembly and replacement of the electrode module, which is convenient for users to use and is conducive to improving detection efficiency.

[0073] At the same time, the locking push rod mechanism 4 of the device of the present invention automatically drives the head end of the locking push rod 45 to elastically extend outward from the head end of the pressure seat 43 through the elastic connection structure, so that the locking push rod 45 can adapt to the distance between the fixing part 3 and the reference electrode module 6, and cooperate with the arc groove 423 and the pressure rod 44 to balance the axial force of the locking push rod 45, so that the axial pressure of the locking push rod 45 pushing the reference electrode module 6 is more stable, thereby ensuring the reliability of the locking and fixing between the electrode modules and the sealing effect of the docking and connection of each liquid path.

[0074] In addition, the locking push rod mechanism 4 of the device of the present invention controls the rotational displacement of the pressure seat 43 in the guide seat 42 by the pressure rod 44. When locking and fixing the electrode module, the pressure rod 44 is moved to the front end of the arc groove 423. When releasing the electrode module, the pressure rod 44 is moved to the rear end of the arc groove 423. It is easy to operate in a narrow space and the operation is simple and convenient.

[0075] It should be noted that the structural design of the guide seat 42 in this embodiment is merely a preferred embodiment of the present invention and does not limit the technical solution of the present invention. In other embodiments, the guide seat 42 can be designed to have both left and right ends open, and can be longitudinally fixedly connected to the fixed portion 3 via its rear cylindrical wall, ensuring that its axis corresponds to the axis of the first liquid path 71, the second liquid path 51, and the third liquid path 61.

[0076] At the same time, the pressure seat 43 can also be designed as other non-cylindrical strip structures, which does not need to match the inner cavity of the guide seat 42. It only needs to ensure that it can be on the same axis as the guide seat 42 through the locking push rod 45, and can rotate forward and backward along the arc groove 423 under the push of the pressure rod 44.

[0077] Further, refer to Figure 4 and Figure 5 As shown, the elastic connection structure of the locking push rod mechanism 4 of the present invention includes a spring cavity, an anti-slip portion 451 and a pressure spring 46.

[0078] Specifically, the spring chamber is longitudinally arranged in the pressure seat 43 , and the push rod through hole 432 is coaxial with the spring chamber and communicated with the spring chamber.

[0079] Specifically, the anti-slip portion 451 is a disc-shaped structure, radially fixedly connected to the middle and rear position of the locking push rod 45 and movable in the spring cavity. Its outer diameter is preferably matched with the inner diameter of the spring cavity, and its outer diameter is larger than the inner diameter of the push rod through hole 432.

[0080] Specifically, the pressure spring 46 is elastically accommodated in the spring cavity and movably sleeved on the rear part of the locking push rod 45. Under normal conditions, the head end of the pressure spring 46 elastically abuts against the anti-slip portion 451, and the tail end of the pressure spring 46 elastically abuts against the rear end of the spring cavity to elastically push the anti-slip portion 451 to the front end of the spring cavity, so that the pressure spring 46 is partially compressed in the spring cavity, which is used to drive the head end of the locking push rod 45 to automatically extend elastically outward from the head end of the pressure seat 43.

[0081] Of course, in some other embodiments, the pressure spring 46 may also be in a naturally stretched state in the spring cavity, that is, the naturally stretched length of the pressure spring 46 matches the inner length of the spring cavity. When the front end of the locking push rod 45 is subjected to a horizontal force to the right, the anti-slip portion 451 will act on the pressure spring 46 to apply a reverse elastic force to the locking push rod 45.

[0082] The spring chamber of the elastic connection structure of the present invention is arranged inside the pressure seat 43, and the pressure spring 46 and the anti-slip portion 451 in the spring chamber are used to automatically and elastically push the locking push rod 45. It has a simple structure, ingenious design, and high structural integration, which is beneficial to reducing the volume of the guide seat 42 and the pressure seat 43, and is beneficial to the intensive design of the locking push rod mechanism 4.

[0083] In addition, the outer diameter of the anti-slip portion 451 of the elastic connection structure of the present invention is larger than the inner diameter of the push rod through hole 432. While limiting the pressure spring 46 through the anti-slip portion 451 to maintain its compressed state, it can also prevent the locking push rod 45 from axially detaching from the pressure seat 43, making the elastic connection between the locking push rod 45 and the pressure seat 43 more reliable.

[0084] Further, refer to Figure 4 and Figure 5 As shown, the spring cavity of the elastic connection structure of the present invention includes an inner groove 433 and a pressure seat cover 47, wherein the inner groove 433 is longitudinally concave along the right end surface of the pressure seat 43 and is coaxial therewith. Since the inner diameter of the inner groove 433 is smaller than the outer diameter of the pressure seat 43, an annular solid area is left between the right end surface of the pressure seat 43 and the opening of the inner groove 433, and a plurality of fixing screw holes 434 are longitudinally provided on the annular solid area.

[0085] Specifically, the pressure seat cover 47 is a disc-shaped structure, which is detachably threadedly fixed to the rear end face of the pressure seat 43 by a screw or a screw through the fixing screw hole 434 to block the inner groove 433, and the push rod through hole 432 is on the axis of the pressure seat cover 47 and penetrates the body of the pressure seat cover 47 longitudinally.

[0086] During actual assembly, first insert the head end of the locking push rod 45 into the inner groove 433 until the anti-slip portion 451 on the locking push rod 45 reaches the head end of the inner groove 433, and then insert the pressure spring 46 from the rear end of the locking push rod 45 and push it into the inner groove 433, and then insert the pressure seat cover 47 from the rear end of the locking push rod 45 and fix it to the rear end surface of the pressure seat 43 through a screw or a screw through the fixing screw hole 434. After fixing, the pressure spring 46 can be limited in the spring cavity through the pressure seat cover 47 and be in a partially compressed state.

[0087] The spring cavity of the elastic connection structure of the present invention is composed of an inner groove 433 and a pressure seat cover 47. The pressure seat cover 47 is detachably connected to the pressure seat 43, which can facilitate the assembly of the locking push rod 45 and the pressure spring 46. It has a simple structure, is easy to disassemble and assemble, and is small in size and easy to maintain.

[0088] Further, refer to Figure 4 and Figure 5 As shown, the rear end of the locking push rod 45 of the locking push rod mechanism 4 of the present invention is longitudinally connected to a push rod liquid outlet pipe 452 connected to the fourth liquid path 41, and the push rod liquid outlet pipe 452 extends to the rear end of the pressure seat 43 through the push rod through hole 432 on the center of the pressure seat cover 47.

[0089] Furthermore, the locking push rod mechanism 4 of the present invention also includes a locking positioning structure, which is arranged between the guide seat 42 and / or the pressure seat 43 and / or the pressure rod 44, and is used to fix the pressure rod 44 at the head end of the arc groove 423, to prevent the analyzer from being subjected to external force to cause the pressure seat 43 to rotate and retreat under the elastic force of the elastic connection structure after the electrode module is locked and fixed during actual use, thereby causing the locking push rod mechanism 4 to release the electrode modules.

[0090] The fixing device of the present invention maintains the locked and fixed state of each electrode module through the provided locking and positioning structure, preventing the problem of electrodes loosening during use, improving the reliability of the fixing device of the present invention in locking and fixing each electrode module, and improving the analyzer's ability to resist external interference.

[0091] Preferably, refer to Figure 6 , which is one preferred embodiment of the locking and positioning structure of the fixing device of the present invention, includes a locking opening 424 provided on the right side of the first end of the arc-shaped groove 423 .

[0092] In actual use, when it is necessary to lock and fix each electrode module, it is only necessary to manually push the pressure rod 44 to the head end of the arc groove 423, and then swing it slightly to the right so that the pressure rod 44 is locked into the locking opening 424. At this time, the pressure rod 44 can automatically be locked to the right in the locking opening 424 by the reverse force of the locking push rod 45 under the action of the elastic force of the pressure spring 46, thereby limiting the position of the pressure rod 44 and preventing it from retreating along the arc groove 423 when subjected to external force.

[0093] Further, refer to Figure 7 As shown, another preferred embodiment of the locking and positioning structure of the fixing device of the present invention includes a locking portion 48 with a nut-like structure. The locking portion 48 is threadedly connected to the pressure rod 44 and is movable outside the wall of the guide seat 42. In actual use, its position on the pressure rod 44 can be adjusted by rotating the locking portion 48. When it is necessary to lock and fix the pressure rod 44 at the head end of the arc groove 423, it is only necessary to rotate the locking portion 48 downward so that its bottom is tightly against the wall of the guide seat 42, and it can be locked and fixed to the guide seat 42, thereby limiting the position of the pressure seat 43 and the locking push rod 45, ensuring the locking and fixing effect of each electrode module. When it is necessary to loosen each electrode module, it is only necessary to rotate the locking portion 48 upward to separate it from the wall of the fixing seat 1.

[0094] Compared with the design of the locking opening 424, the position-adjustable locking portion 48 has a better limiting effect on the pressure rod 44, has a higher reliability in locking and fixing each electrode module, has a stronger ability to resist external interference, and has a simple structure and is easy to use.

[0095] Further, refer to Figure 2 As shown, the fixing seat 1 of the fixing device of the present invention includes a back plate 12 and a guide clamping optical axis 13.

[0096] Specifically, the back panel 12 is a vertically arranged plate structure made of a hard metal or other hard non-metallic material. It has a plurality of first fixing holes 111 at its left front end and a plurality of second fixing holes 112 at its right rear end. The detection base 2 is threadedly connected to the front end of the front side wall of the back panel 12 via a screw or bolt through the first fixing holes 111. The fixing portion 3 is threadedly connected to the rear end of the front side wall of the back panel 12 via a screw or bolt through the second fixing holes 112, facing the detection base 2.

[0097] Specifically, the guide clamping optical axis 13 is a sliding rod structure with a smooth surface, which is horizontally and longitudinally fixedly connected between the detection base 2 and the lower part of the fixed part 3. Five indicator electrode modules 5 and one reference electrode module 6 are arranged in sequence and longitudinally movably and clamped on the guide clamping optical axis 13. The guide clamping optical axis 13 cooperates with the back plate 12 to support and limit the guiding of each electrode module.

[0098] The fixing device of the present invention uses the back plate 12 to abut against the rear end face of each electrode module, and cooperates with the guide clamping optical axis 13 and the detection base 2 to support and limit each electrode module, thereby limiting the longitudinal movement of each electrode module along the guide clamping optical axis 13 under the axial elastic force of the locking push rod mechanism 4, ensuring the reliability of the sequential docking of each electrode module with the detector 7, and has a simple structure, easy disassembly and assembly, and a small volume.

[0099] Furthermore, the indicator electrode module 5 and the reference electrode module 6 of the fixing device of the present invention both include an electrode holder and an inner electrode.

[0100] Specifically, refer to Figure 8 As shown, the electrode seat of the indicating electrode module 5 is the first electrode seat 52, which is designed as a cubic structure. The head and tail ends (left and right end faces) of each first electrode seat 52 can be matched and sealed. The bottom of the first electrode seat 52 is longitudinally provided with a first slide groove 53 for movably clamping the guide clamping optical axis 13. The upper part of the first electrode seat 52 is vertically provided with a first electrode chamber 54 whose bottom is vertically connected to the second liquid path 51. The first inner electrode 55 is detachably connected to the first electrode chamber 54, and the first electrical contact 551 of the first inner electrode 55 extends to the outside of the upper end of the first electrode seat 52.

[0101] Specifically, refer to Figure 9 As shown, the electrode seat of the reference electrode module 6 is the second electrode seat 62, which is also designed as a cubic structure. The head end (left end face) of the second electrode seat 62 can be matched and sealed with the tail end (right end face) of any first electrode seat 52. The bottom of the second electrode seat 62 is longitudinally provided with a second slide groove 63 for movably clamping the guide clamping optical axis 13. The upper part of the second electrode seat 62 is vertically provided with a second electrode chamber 64 whose bottom is vertically connected to the third liquid path 61. A second inner electrode 65 is detachably connected to the second electrode chamber 64, and the second electrical contact 651 of the second inner electrode 65 extends to the outside of the upper end of the second electrode seat 62.

[0102] The structures of each indicator electrode module 5 and reference electrode module 6 are generally identical, each comprising a cubic electrode holder and an inner electrode plugged into the electrode chamber. The left and right end faces of each electrode holder of each electrode module of the present invention can be matched and sealed together, ensuring that each electrode module can be sequentially sealed end to end under the limiting action of the first slide 53, the guide clamping optical axis 13, and the back plate 12, thereby improving the reliability of the fixing device of the present invention in locking and fixing each electrode module. Furthermore, the position of each indicator electrode module 5 with the same structure can be adjusted according to actual testing needs, and it can also be replaced by designing a prosthetic indicator electrode module 5 with the same structure.

[0103] Further, refer to Figure 9As shown, the reference electrode module 6 on the fixing device of the present invention has a stop fitting groove 66 at its tail end (its right end face) for movably engaging and locking the head end of the ejector pin 45 , and the third liquid path 61 is located on the axis of the stop fitting groove 66 and passes through it.

[0104] In actual use, when the pressure rod 44 is manually pushed by the user to the head end of the arc groove 423, the locking push rod 45 is elastically pushed into the stop matching groove 66. While locking and fixing each electrode module, the fourth liquid path 41 on the locking push rod 45 is sealed and connected with the third liquid path 61 on the reference electrode module 6 through the stop matching groove 66.

[0105] The above embodiment is only for the purpose of clearly illustrating a specific embodiment of the present invention, and is not intended to limit the embodiment of the present invention. For those skilled in the art, based on the present invention, it is possible to deduce and summarize other adjustments or changes to the fixing seat 1, the detection base 2, the fixing portion 3, the locking ejector mechanism 4, the guide seat 42, the arc groove 423, the pressure seat 43, the pressure rod 44, the elastic connection structure, the locking ejector 45, the locking positioning structure, the indicator electrode module 5 and the reference electrode module 6, etc., which are not listed here one by one. Any modification, replacement or improvement made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. An electrode holder fixing device for an electrolyte analyzer, characterized in that: Includes: A fixing seat (1) is provided with a detection base (2) for fixing a detector (7) at its front end and a fixing portion (3) at its rear end, wherein an electrode cabin (11) for sequentially arranging and clamping an indicator electrode module (5) and a reference electrode module (6) is formed between the detection base (2) and the fixing portion (3); the detector (7) is provided with a first liquid path (71), the indicator electrode module (5) is provided with a second liquid path (51), and the reference electrode module (6) is provided with a third liquid path (61); the first liquid path (71), the second liquid path (51) and the third liquid path (61) can be connected to each other in a sealed manner in sequence in the electrode cabin (11); A locking push rod mechanism (4) is fixed on the fixed portion (3), and a fourth liquid path (41) is provided on the action end thereof, which can elastically press against the reference electrode module (6) and sequentially push the indicating electrode module (5) to dock with the detector (7) under the limit of the detection base (2), thereby sequentially locking and fixing each electrode module and the detector (7) into one body, and making the fourth liquid path (41), the third liquid path (61), the second liquid path (51) and the first liquid path (71) sealed and docked and connected; The locking push rod mechanism (4) comprises: The guide seat (42) is a hollow cylindrical structure, which is fixedly mounted on the fixing portion (3) longitudinally, and has an arc-shaped groove (423) extending around its axis on one side of the cylindrical wall; The pressure seat (43) is movably located in the guide seat (42) and coaxial therewith, and a pressure rod (44) is radially connected to the side wall of the head end thereof and extends outward from the guide seat (42) through the arc groove (423), and a push rod through hole (432) is provided through the axis thereof, and a locking push rod (45) is movably inserted into the push rod through hole (432) via an elastic connection structure, and the fourth liquid path (41) is provided through the axis of the locking push rod (45); Under normal conditions, the head end of the locking push rod (45) can automatically extend outward from the head end of the pressure seat (43) under the elastic force of the elastic connection structure; when the pressure rod (44) moves to the head end of the arc groove (423), the pressure seat (43) is located at its forward limit position and drives the head end of the locking push rod (45) to elastically press against the reference electrode module (6); when the pressure rod (44) moves to the rear end of the arc groove (423), the pressure seat (43) is located at its rearward limit position and drives the head end of the locking push rod (45) to separate from the reference electrode module (6); The elastic connection structure includes: The spring chamber is provided in the pressure seat (43), and the push rod through hole (432) passes through the axis thereof and is in communication with the spring chamber; An anti-slip portion (451) is radially arranged on the locking push rod (45) and is movable in the spring cavity, and its outer circumference is larger than the inner diameter of the push rod through hole (432); The pressure spring (46) is elastically accommodated in the spring cavity and movably sleeved on the locking push rod (45). Under normal conditions, its head end elastically abuts against the anti-slip portion (451), and its tail end elastically abuts against the rear end of the spring cavity to elastically push the anti-slip portion (451) to the front end of the spring cavity, so as to drive the head end of the locking push rod (45) to automatically and elastically extend outward from the head end of the pressure seat (43).

2. The electrode holder fixing device for an electrolyte analyzer according to claim 1, characterized in that: The spring chamber includes: An inner groove (433) is longitudinally concave along the rear end surface of the pressure seat (43) and is coaxial therewith; The pressure seat cover (47) is detachably fixedly connected to the rear end surface of the pressure seat (43) to block the inner groove (433), and the push rod through hole (432) is located on its axis and passes through its body.

3. The electrode holder fixing device for an electrolyte analyzer according to claim 1, characterized in that: The locking push rod mechanism (4) further comprises: A locking and positioning structure is provided between the guide seat (42) and / or the pressure seat (43) and / or the pressure rod (44), and is used to fix the pressure rod (44) at the head end of the arc groove (423) to prevent the pressure seat (43) from rotating back under the elastic force of the elastic connection structure.

4. The electrode holder fixing device for an electrolyte analyzer according to claim 3, characterized in that: The locking and positioning structure includes: The locking opening (424) is provided at the rear side of the head end of the arc-shaped groove (423) and is used to lock the pressure rod (44) to prevent it from retreating along the arc-shaped groove (423).

5. The electrode holder fixing device for an electrolyte analyzer according to claim 3, characterized in that: The locking and positioning structure includes: The locking portion (48) is threadedly connected to the pressure rod (44) and is movable outside the cylindrical wall of the guide seat (42). Its position can be adjusted along the axial direction of the pressure rod (44) to tightly abut against the cylindrical wall of the guide seat (42) to lock the pressure seat (43).

6. The electrode holder fixing device for an electrolyte analyzer according to claim 1, characterized in that: The fixing seat (1) comprises: The back plate (12) is arranged vertically and longitudinally, and the detection base (2) and the fixing portion (3) are respectively detachably fixedly connected to the front and rear ends of the front side wall; The guide clamping optical axis (13) is fixedly connected horizontally and longitudinally between the detection base (2) and the lower part of the fixed part (3), and the indicator electrode module (5) and the reference electrode module (6) are arranged longitudinally and movably in sequence and clamped thereon, playing the role of supporting and limiting the guiding of each electrode module.

7. The electrode holder fixing device for an electrolyte analyzer according to claim 6, characterized in that: The indicator electrode module (5) and the reference electrode module (6) both include: The electrode holder can be matched and docked at both ends, and a sliding groove is longitudinally provided at the bottom for movably clamping the guide clamping optical axis (13). An electrode chamber is vertically provided at the upper part and is vertically connected to the second liquid path (51) or the third liquid path (61). An inner electrode is detachably connected to the electrode chamber, and the electrical contact of the inner electrode extends to the outside of the upper end of the electrode holder.

8. The electrode holder fixing device for an electrolyte analyzer according to claim 1, characterized in that: The tail end of the reference electrode module (6) is provided with a stop fitting groove (66) for movably engaging the action end of the locking ejector mechanism (4), and the third liquid path (61) is located on the axis of the stop fitting groove (66) and passes through it.

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