Calibrating device for peristaltic pump of electrolyte analyzer
By using alternate -mocked injection cylinders and pressure differential pressure sensors in the electrolyte analyzer, the automatic calibration of the peristaltic pump is realized, the detection accuracy of the material aging is reduced, and the calibration accuracy and the simple operation are improved.
Patent Information
- Application Number
- CN202420976145.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-08
AI Technical Summary
In the prior art, after a long operation of the electrolyte analyzer peristaltic pump, due to material aging, deformation, wear and other reasons, the volume of the sample absorbed by rotating for one cycle has changed, which reduces the detection accuracy of the instrument, and the existing calibration method is complicated to operate. And the accuracy is low, and it cannot meet the needs of high-precision pumping.
Combine with the first injection cylinder with the second injection cylinder, detect the work matching of the peristaltic pump, use the pressure differential meter and pressure sensor to monitor the pressure change, automatically adjust the speed of the peristaltic pump into the motor, and achieve automatic calibration of the peristaltic pump.
It improves the calibration accuracy and simple operation of the peristaltic pump, ensure the high -precision pumping capacity of the electrolyte analyzer, and extend the life of the instrument.
Smart Images
Figure CN222415181U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of peristaltic pump calibration equipment, in particular to a peristaltic pump calibration device for an electrolyte analyzer. Background Art
[0002] During the working process, the electrolyte analyzer uses a peristaltic pump to accurately absorb a certain amount of sample for detection. The amount of sample absorbed is a basic condition for calculating the test results. Usually, the control system of the instrument obtains the amount of sample absorbed by the number of rotations of the peristaltic pump, that is, it is assumed that the volume of sample absorbed by one rotation of the peristaltic pump is fixed. The fixed volume corresponding to one rotation of the peristaltic pump is generally an empirical value obtained through initial tests. Once this volume is determined, it is input into the instrument control system as a control parameter and will not change. In fact, after the instrument has been running for a period of time, due to material aging, deformation, wear and other reasons, the actual volume of the sample absorbed by one rotation of the peristaltic pump will change, thus reducing the detection accuracy of the instrument.
[0003] In order to ensure the accurate pumping of the peristaltic pump in the prior art, the peristaltic pump needs to be calibrated before each use, and the control system of the peristaltic pump needs to be adjusted according to the obtained calibration parameters; however, the calibration method used in the prior art is not only cumbersome to operate, but also its calibration accuracy is generally low, which cannot meet the actual needs of high-precision pumping in the prior art. Utility Model Content
[0004] The utility model provides a peristaltic pump calibration device for an electrolyte analyzer, which detects the working matching degree of the peristaltic pump by alternately cooperating a first syringe and a second syringe, thereby providing a setting basis for the calibration of the peristaltic pump according to the matching state.
[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a peristaltic pump calibration device for an electrolyte analyzer, comprising: a shell, the shell is a cavity structure and is provided with a pair of detection ports on one side, a cable port on the other side, and a keyboard on the top; a first syringe and a second syringe are arranged in parallel in the shell, the first syringe and the second syringe are respectively provided with a first electric cylinder and a second electric cylinder, the first syringe and the second syringe are respectively extended outward through a first pipe and a second pipe through the detection port, and the first pipe is connected to a first differential pressure gauge through a tee, and the second pipe is connected to a second differential pressure gauge through a tee; a control board, the control board is fixedly arranged in the shell, and the keyboard, the first electric cylinder, and the second electric cylinder are respectively electrically connected to the control board.
[0006] Preferably, the control board is connected to a communication cable, and the communication cable extends outward through the cable port and communicates with an external control module of the peristaltic pump.
[0007] Preferably, the first electric cylinder is connected to the inner wall of the outer shell through a first pressure sensor, and the second electric cylinder is connected to the inner wall of the outer shell through a second pressure sensor; a display is provided on the top of the outer shell, and the first pressure sensor, the second pressure sensor and the display are electrically connected to the control board respectively.
[0008] Preferably, the outer side walls of the first injection cylinder and the second injection cylinder are respectively provided with fixing grooves, and are fixedly connected to the inner side wall of the shell by a tube clamp sleeved on the fixing grooves.
[0009] Preferably, the free ends of the first pipe and the second pipe are respectively provided with Luer connectors.
[0010] Preferably, a battery is provided in the housing, and the battery is electrically connected to the control board.
[0011] The beneficial effect of the utility model is that the first electric cylinder and the second electric cylinder are alternately extended and retracted to control the alternate reciprocating motion of the plungers in the first syringe and the second syringe, the control board sends a signal to the external control module through the communication cable, and the peristaltic pump is made to perform a pumping action according to the movement direction and the pushing amount of the first syringe and the second syringe. During this retrieval process, the first differential pressure gauge and the second differential pressure gauge respectively monitor the pressure changes in the first pipeline and the second pipeline. When the pumping speed of the peristaltic pump is equal to the pushing and pulling speed of the first syringe and the second syringe, the readings of the first differential pressure gauge and the second differential pressure gauge remain unchanged; when the pumping speed of the peristaltic pump is not equal to the pushing and pulling speed of the first syringe and the second syringe, the absolute value of the reading of the first differential pressure gauge or the second differential pressure gauge will gradually increase. At this time, an adjustment signal is sent to the external control module of the peristaltic pump through the operation keyboard, thereby accelerating or reducing the rotation speed of the stepper motor of the peristaltic pump to realize the calibration of the peristaltic pump. In the preferred embodiment, the first pressure sensor and the second pressure sensor collect the force of the first electric cylinder and the second electric cylinder when they are working. When the pumping speed of the peristaltic pump is equal to the push-pull speed of the first syringe and the second syringe, the collected values of the first pressure sensor and the second pressure sensor remain unchanged. When the pumping speed of the peristaltic pump is not equal to the push-pull speed of the first syringe and the second syringe, the collected values of the first pressure sensor and the second pressure sensor gradually change. At this time, the control board automatically sends an adjustment signal to the external control module of the peristaltic pump according to the collected values of the first pressure sensor and the second pressure sensor to speed up or reduce the speed of the peristaltic pump stepper motor, thereby realizing automatic calibration. In addition, a battery is provided in the housing, and the battery is electrically connected to the control board. At the same time, the communication cable adopts a universal USB cable, and the battery is charged when the power adapter is connected. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0014] Figure 2 This is a schematic diagram of the internal structure of the utility model;
[0015] Figure 3 This is a schematic diagram of the application status of the utility model.
[0016] In the figure: 1. housing; 2. first syringe; 3. second syringe; 4. first electric cylinder; 5. second electric cylinder; 6. first pipeline; 7. second pipeline; 8. first differential pressure gauge; 9. second differential pressure gauge; 10. control panel; 11. keyboard; 12. communication cable; 13. first pressure sensor; 14. second pressure sensor; 15. fixing groove; 16. pipe clamp; 17. Luer connector; 18. battery; 19. peristaltic pump; 20. liquid bag; 21. three-way valve; 22. display; 23. pump tube. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings of the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] according to Figure 1 , Figure 2 , Figure 3As shown, a peristaltic pump calibration device for an electrolyte analyzer comprises: a housing 1, the housing 1 is a cavity structure and is provided with a pair of detection ports on one side, a cable port on the other side, and a keyboard 11 on the top; a first syringe 2 and a second syringe 3 are arranged in parallel in the housing 1, the first syringe 2 and the second syringe 3 are respectively provided with a first electric cylinder 4 and a second electric cylinder 5, the first syringe 2 and the second syringe 3 are respectively extended outward through the detection port through a first pipe 6 and a second pipe 7, and the first pipe 6 is connected to a first differential pressure gauge 8 through a tee, and the second pipe 7 is connected to a second differential pressure gauge 9 through a tee; a control board 10, the control board 10 is fixedly arranged in the housing 1, and the keyboard 11, the first electric cylinder 4, and the second electric cylinder 5 are respectively electrically connected to the control board 10. Wherein, the control board 10 is connected to a communication cable 12, the communication cable 12 extends outward through the cable port, and communicates with the external control module of the peristaltic pump 19.
[0019] Through the above arrangement, during the calibration of the peristaltic pump of the electrolyte analyzer, two test liquid bags 20 are prepared, and the first pipeline 6 is connected to one test liquid bag 20 and one end of the pump tube 23 of the peristaltic pump 19 through the three-way valve 21, and the first pipeline 6 is connected to the other test liquid bag 20 and the other end of the pump tube 23 of the peristaltic pump 19 through the three-way valve 21. At this time, the pump tube 23 of the peristaltic pump 19, the first syringe 2, and the second syringe 3 are filled with liquid by starting the peristaltic pump 19 and operating the keyboard 11. When no bubbles appear, the connection with each test liquid bag 20 is cut off through the two three-way valves 21, and the detection state is entered. In the detection state, the first electric cylinder 4 and the second electric cylinder 5 are alternately extended and retracted, thereby controlling the alternate reciprocating motion of the plungers in the first syringe 2 and the second syringe 3. The control board 10 sends a signal to the external control module through the communication cable 12, and enables the peristaltic pump to perform pumping according to the movement direction and push amount of the first syringe 2 and the second syringe 3. During this retrieval process, the first differential pressure gauge 8 and the second differential pressure gauge 9 respectively monitor the pressure changes in the first pipeline 6 and the second pipeline 7. When the pumping speed of the peristaltic pump 19 is equal to the push-pull speed of the first syringe 2 and the second syringe 3, the readings of the first differential pressure gauge 8 and the second differential pressure gauge 9 remain unchanged; when the pumping speed of the peristaltic pump 19 is not equal to the push-pull speed of the first syringe 2 and the second syringe 3, the absolute value of the reading of the first differential pressure gauge 8 or the second differential pressure gauge 9 will gradually increase. At this time, an adjustment signal is sent to the external control module of the peristaltic pump 19 through the operation keyboard 11, thereby accelerating or reducing the speed of the stepper motor of the peristaltic pump 19 to achieve the calibration of the peristaltic pump 19.
[0020] The first electric cylinder 4 is connected to the inner wall of the housing 1 through a first pressure sensor 13, and the second electric cylinder 5 is connected to the inner wall of the housing 1 through a second pressure sensor 14; a display 22 is provided on the top of the housing 1, and the first pressure sensor 13, the second pressure sensor 14 and the display 22 are electrically connected to the control board 10 respectively.
[0021] Through this setting, during the detection process, the first pressure sensor 13 and the second pressure sensor 14 collect the forces of the first electric cylinder 4 and the second electric cylinder 5 when they are working. When the pumping speed of the peristaltic pump 19 is equal to the push-pull speed of the first syringe 2 and the second syringe 3, the collected values of the first pressure sensor 13 and the second pressure sensor 14 remain unchanged. When the pumping speed of the peristaltic pump 19 is not equal to the push-pull speed of the first syringe 2 and the second syringe 3, the collected values of the first pressure sensor 13 and the second pressure sensor 14 gradually change. At this time, the control board 10 automatically sends an adjustment signal to the external control module of the peristaltic pump 19 according to the collected values of the first pressure sensor 13 and the second pressure sensor 14 to speed up or reduce the speed of the stepper motor of the peristaltic pump 19, thereby realizing automatic calibration.
[0022] To ensure the reliability of the device, the outer side walls of the first injection cylinder 2 and the second injection cylinder 3 are respectively provided with fixing grooves 15 , and are fixedly connected to the inner side wall of the housing 1 via a tube clamp 16 sleeved on the fixing grooves 15 .
[0023] The free ends of the first pipe 6 and the second pipe 7 are respectively provided with Luer connectors 17, and the Luer connectors 17 are used to detect and calibrate peristaltic pumps 19 of various specifications.
[0024] A battery 18 is disposed in the housing 1 and is electrically connected to the control board 10 . Meanwhile, the communication cable 12 is a universal USB cable and can charge the battery 18 when connected to a power adapter.
[0025] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A peristaltic pump calibration device for an electrolyte analyzer, characterized in that: include: A housing (1), the housing (1) being a cavity structure and having a pair of detection ports on one side, a cable port on the other side, and a keyboard (11) on the top; A first injection cylinder (2) and a second injection cylinder (3) are arranged in parallel in the housing (1); the first injection cylinder (2) and the second injection cylinder (3) are respectively provided with a first electric cylinder (4) and a second electric cylinder (5); the first injection cylinder (2) and the second injection cylinder (3) respectively extend outward through the detection port through a first pipe (6) and a second pipe (7); the first pipe (6) is connected to a first differential pressure gauge (8) through a tee, and the second pipe (7) is connected to a second differential pressure gauge (9) through a tee; A control panel (10), wherein the control panel (10) is fixedly arranged in the housing (1), and the keyboard (11), the first electric cylinder (4), and the second electric cylinder (5) are electrically connected to the control panel (10) respectively.
2. The peristaltic pump calibration device for an electrolyte analyzer according to claim 1, characterized in that: The control panel (10) is connected to a communication cable (12), and the communication cable (12) extends outward through the cable port and communicates with an external control module of the peristaltic pump (19).
3. The peristaltic pump calibration device for an electrolyte analyzer according to claim 1, characterized in that: The first electric cylinder (4) is connected to the inner wall of the housing (1) via a first pressure sensor (13), and the second electric cylinder (5) is connected to the inner wall of the housing (1) via a second pressure sensor (14); a display (22) is provided on the top of the housing (1), and the first pressure sensor (13), the second pressure sensor (14) and the display (22) are electrically connected to the control panel (10) respectively.
4. The peristaltic pump calibration device for an electrolyte analyzer according to claim 1, characterized in that: The outer side walls of the first injection cylinder (2) and the second injection cylinder (3) are respectively provided with fixing grooves (15), and are fixedly connected to the inner side wall of the outer shell (1) via a tube clamp (16) sleeved on the fixing grooves (15).
5. The peristaltic pump calibration device for an electrolyte analyzer according to claim 1, characterized in that: The free ends of the first pipe (6) and the second pipe (7) are respectively provided with Luer connectors (17).
6. The peristaltic pump calibration device for an electrolyte analyzer according to claim 1, characterized in that: A storage battery (18) is arranged inside the housing (1), and the storage battery (18) is electrically connected to the control panel (10).