CN217084982U - Double-flow-path liquid detection system and blood gas electrolyte analyzer - Google Patents
Double-flow-path liquid detection system and blood gas electrolyte analyzer Download PDFInfo
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- CN217084982U CN217084982U CN202123214156.4U CN202123214156U CN217084982U CN 217084982 U CN217084982 U CN 217084982U CN 202123214156 U CN202123214156 U CN 202123214156U CN 217084982 U CN217084982 U CN 217084982U
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Abstract
The utility model discloses a double-flow-path liquid detection system and blood gas electrolyte analyzer, this double-flow-path liquid detection system includes the main flow path, side flow path, concatenate first liquid level detection sensor on the main flow path in proper order, insensitive sensor, second liquid level detection sensor, pump M1, concatenate solenoid valve V11 on side flow path in proper order, sensitive sensor and pump M2, sampling system's output is connected to the input of main flow path, solenoid valve V11's input is connected between second liquid level detection sensor and pump M1, the second kit is connected to the output of main flow path and side flow path, sampling system includes the support, step motor, zero-bit detection mechanism, the track dish, the driving-disc, syringe and needle frame. The utility model provides high liquid detection efficiency and detection quality have improved the result of use of sensor, have prolonged the life of sensor to can avoid the false retrieval problem that arouses because the sensor is too much.
Description
Technical Field
The utility model relates to a blood gas electrolyte analyzer technical field, in particular to double-flow-path liquid detecting system and blood gas electrolyte analyzer.
Background
At present, the performance of the domestic blood gas electrolyte analyzer tends to be stable, and the flow path design is more and more mature. The flow path of the blood gas electrolyte analyzer is generally a single flow path system, in which a sample injection system, a sensor module, reagents (measurement reagent, cleaning solution, waste liquid), a pump, and the like are connected in series on the flow path.
When a single-flow-path system is used for sample measurement, cleaning or maintenance, reagents must pass through each sensor, and the testing accuracy and the service life of the sensors are seriously influenced by the partially sensitive sensors after the sensors are washed by the reagents.
Moreover, the existing sample introduction systems are various in types, and are basically divided into two categories, namely manual sample introduction and full-automatic sample introduction, and some instruments for measuring serum or venous blood samples have a large sample amount and relatively long effective time of the samples, so that automatic sample introduction including an automatic sample introduction disc is mostly used; in the subdivided field of blood gas analysis, arterial blood is collected and analyzed immediately (as soon as possible), so manual sampling is often used. A plurality of sensors are required to be installed for manual sample introduction, and the manual sample introduction requirements are met for sample introduction of a common injector and sample introduction of a capillary blood collection tube. Because the sensors are more and the positions are very close, the instrument may have false detection and bad experience.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a double-flow-path liquid detecting system and blood gas electrolyte analyzer aims at improving liquid detection efficiency and detection quality, improves the result of use of sensor, prolongs the life of sensor to avoid because the false retrieval problem that the sensor too much arouses.
In order to achieve the above object, the present invention provides a dual-flow-path liquid detection system, which comprises a main flow path, a secondary flow path, a sample introduction system, a first liquid level detection sensor, an insensitive sensor, a second liquid level detection sensor, a pump M1, a solenoid valve V11, a sensitive sensor, a pump M2, a first kit, and a second kit;
the first liquid level detection sensor, the insensitive sensor, the second liquid level detection sensor and the pump M1 are sequentially connected in series on the main flow path, the input end of the main flow path is connected with the output end of the sample injection system, the electromagnetic valve V11, the sensitive sensor and the pump M2 are sequentially connected in series on the secondary flow path, the input end of the electromagnetic valve V11 is connected between the second liquid level detection sensor and the pump M1, the output ends of the main flow path and the secondary flow path are connected with the second reagent kit, and the second reagent kit and the first reagent kit are sequentially connected in series between the output ends of the main flow path and the secondary flow path and the input end of the sample injection system;
the sample injection system comprises a support, a stepping motor, a zero position detection mechanism, a track disc, a driving disc, a sample injection needle and a needle frame, wherein the stepping motor is arranged on the support, the zero position detection mechanism is arranged at one end of the stepping motor, the track disc is arranged on the support and is positioned at the other end of the stepping motor, the driving disc is arranged on the track disc and is linked with the stepping motor, the upper end of the sample injection needle is rotatably arranged on the track disc, the lower end of the sample injection needle is telescopically arranged in the needle frame, and the upper end of the needle frame is rotatably connected with the driving disc; the zero position detection mechanism comprises a zero position detection sensor and a detection coded disc, wherein the zero position detector is arranged on the bracket, and the detection coded disc is connected with an output shaft of the stepping motor;
when the stepping motor moves, the driving disc is driven to move along the periphery of the track disc, and the driving disc drives the needle frame to move around the upper end of the sampling needle, so that the sampling needle extends out of or retracts into the needle frame, and the angle of the sampling needle is adjusted.
The utility model discloses a further technical scheme is, the syringe is "7" style of calligraphy, the upper end of syringe rotate through the pivot install in on the track dish.
The utility model discloses a further technical scheme is, be provided with the spout on the needle frame, the pivot set up in the spout.
The utility model discloses a further technical scheme is, the both ends of track dish are provided with and are used for the restriction the rotation range's of driving-disc spacing groove.
The utility model adopts the further technical proposal that the lower end of the needle frame is provided with a cleaning mechanism for cleaning the sample injection needle; the cleaning mechanism includes: and the sealing ring and the wiping nozzle are arranged in the needle frame and form a sealing cavity.
The utility model discloses a further technical scheme is, during initial state, be equipped with maintenance liquid in the sensitive type sensor.
The utility model discloses a further technical scheme is, be equipped with the GL washing liquid in the second kit, the second kit is provided with and is used for control the GL washing liquid gets into the solenoid valve V4 of flow path.
The utility model discloses a further technical scheme is, be equipped with the M washing liquid in the second kit, the second kit is provided with and is used for control the M washing liquid gets into the solenoid valve V10 of flow path.
The utility model discloses a further technical scheme is, double-flow-path liquid detecting system still include with the controller that sampling system, first liquid level detection sensor, insensitive sensor, second liquid level detection sensor, pump M1, solenoid valve V11, sensitive sensor, pump M2, solenoid valve V4, solenoid valve V10 are connected.
In order to achieve the above object, the present invention further provides a blood gas electrolyte analyzer, which includes the dual-flow-path liquid detection system as described above.
The utility model discloses double-flow-path liquid detection system and blood gas electrolyte analyzer's beneficial effect is: the above technical scheme of the utility model, improved liquid detection efficiency and detection quality, improved the result of use of sensor, prolonged the life of sensor to can avoid because the too much false retrieval problem that arouses of sensor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of the overall structure of a preferred embodiment of the dual flow path liquid detection system of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the sample injection system;
FIG. 3 is a schematic view of the structure of the cleaning mechanism;
FIG. 4 is a schematic view of another angle of the sample injection system;
fig. 5 is a schematic view of the working principle of the dual-flow-path liquid detection system of the present invention.
The reference numbers illustrate:
a bracket 1; a stepping motor 2; a track disk 3; a drive plate 4; a sample injection needle 5; a needle frame 6; a zero detection sensor 7; detecting a coded disc 8; a seal ring 9; the nozzle 10 is wiped.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Consider that reagent all must pass through each sensor when single flow path system surveys appearance, washing or maintenance in present blood gas electrolyte analysis appearance, and some sensitive type sensors can seriously influence the test accuracy and the life-span of sensor after the washing away of reagent to present sampling system sensor is more, and the position all is very close moreover, probably has the false retrieval, consequently, the utility model provides a solution.
Specifically, the utility model provides a double-flow-path liquid detection system, as shown in fig. 1, the utility model discloses double-flow-path liquid detection system preferred embodiment includes main flow path, side flow path, sampling system, first liquid level detection sensor, insensitive sensor, second liquid level detection sensor, pump M1, solenoid valve V11, sensitive sensor, pump M2, first kit, second kit.
The first liquid level detection sensor, the insensitive sensor, the second liquid level detection sensor and the pump M1 are sequentially connected in series on the main flow path, the input end of the main flow path is connected with the output end of the sample injection system, the electromagnetic valve V11, the sensitive sensor and the pump M2 are sequentially connected in series on the auxiliary flow path, the input end of the electromagnetic valve V11 is connected between the second liquid level detection sensor and the pump M1, the output ends of the main flow path and the auxiliary flow path are connected with the second kit, the second kit and the first kit are sequentially connected in series between the output end of the main flow path and the output end of the auxiliary flow path and the input end of the sample injection system.
As shown in fig. 2 to 4, the sampling system includes a support 1, a stepping motor 2, a zero position detection mechanism, a track disc 3, a driving disc 4, a sampling needle 5 and a needle frame 6, wherein, the stepping motor 2 is installed on the support 1, the zero position detection mechanism is installed at one end of the stepping motor 2, the track disc 3 is installed on the support 1 and is located at the other end of the stepping motor 2, the driving disc 4 is installed on the track disc 3 and is linked with the stepping motor 2, the upper end of the sampling needle 5 is rotatably installed on the track disc 3, the lower end is telescopically installed in the needle frame 6, and the upper end of the needle frame 6 is rotatably connected with the driving disc 4.
The zero position detection mechanism comprises a zero position detection sensor 7 and a detection coded disc 8, wherein the zero position detector is installed on the support 1, and the detection coded disc 8 is connected with an output shaft of the stepping motor 2.
When the stepping motor 2 moves, the driving disc 4 is driven to move along the periphery of the track disc 3, and the driving disc 4 drives the needle frame 6 to move around the upper end of the sample injection needle 5, so that the sample injection needle 5 extends out of or retracts into the needle frame 6, and the angle of the sample injection needle 5 is adjusted.
In this embodiment, the stepping motor 2 is a power source of the whole sampling mechanism, the track disc 3 is used for limiting the rotation range of the driving disc 4, the driving disc 4 is used for driving the needle frame 6 and the sampling needle 5 to move, and the sampling needle 5 is used for sucking a sample.
In this embodiment, the driving disk 4 and the stepping motor 2 may be connected by a coupling.
It should be noted that, in this embodiment, the semi-automatic means that the sampling mechanism cannot automatically identify whether a sample exists, and needs to be manually operated according to an operation interface, for example, when a sample needs to be measured, a test is clicked on an instrument interface, at this time, the sampling mechanism will automatically extend the sampling needle for sample suction, and after the sample is removed according to a system prompt, the sampling mechanism will automatically return to the original position.
Compared with the prior art, the embodiment only uses one zero position detection sensor 7 to match with the high-precision detection coded disc 8, so that the problem of more false detection of the sensor can be effectively avoided, and switching of different sample types (for example, capillary vessels need horizontal sampling) can be realized through control of the stepping motor 2. The whole process only needs to click the corresponding sample type on an operation interface, the stepping motor 2 can drive the sample injection needle 5 to automatically move to a preset position to prepare for sample absorption, the whole process is simple and reliable in operation, in addition, the system does not need manual operation when automatically maintaining an instrument flow path, and the automatic control sample injection mechanism can be used for realizing.
Further, in this embodiment, the injection needle 5 is "7" font, the upper end of injection needle 5 through the pivot rotate install in on the track dish 3.
A sliding groove is formed in the needle frame 6, and the rotating shaft is arranged in the sliding groove. When the driving disc 4 drives the needle frame 6 to move, the needle frame 6 moves up and down and moves in an arc shape around the rotating shaft simultaneously.
And two ends of the track disc 3 are provided with limiting grooves for limiting the rotation range of the driving disc 4. Fig. 1 is a schematic diagram of the position state of the needle holder 6 in the initial position (zero position), the driving disk 4 can rotate 180 ° clockwise around the track disk 3, the needle holder 6 is driven to move during the rotation process so that the sample injection needle 5 automatically extends for sampling, and when the needle holder 6 rotates counterclockwise, the sample injection needle 5 retracts into the needle holder 6.
It can be understood that, to the switching of different sample types, the utility model discloses there is an initial position (zero bit promptly), begins from the initial position, step motor 2 clockwise rotation certain angle (for example 90) location syringe advances appearance position, and step motor 2 follows initial position clockwise rotation 180 and advances appearance position for the capillary (because of the particularity of capillary all needs the level to advance the appearance).
Further, in this embodiment, the lower end of the needle holder 6 is provided with a cleaning mechanism for cleaning the injection needle 5.
Wherein, wiper mechanism includes: and the sealing ring 9 and the wiping nozzle 10 are arranged in the needle frame 6, and the sealing ring 9 and the wiping nozzle 10 form a sealed cavity.
Specifically, in this embodiment, the sealing ring 9 and the wiping nozzle 10 are both sealed with the outer wall of the sampling needle 5, and a sealing cavity is formed therebetween. When the sample injection needle 5 is at the position shown in fig. 2, the needle port of the sample injection needle 5 is communicated with the port A, the calibration solution and the cleaning solution are sucked from the port A, and the inner wall of the sample injection needle 5 is cleaned at the moment; and the port B is a sample suction port, when the sampling needle 5 extends out to suck samples, a small amount of sample needles are stuck on the outer wall of the sampling needle 5 to retreat, and the wiping nozzle 10 scratches and rubs off the samples on the outer wall of the sampling needle 5.
In this embodiment, in the initial state, the sensitive sensor is filled with the maintenance liquid. The first kit is provided with a calibration solution.
In this embodiment, the second reagent kit contains a GL cleaning solution, and the second reagent kit is provided with an electromagnetic valve V4 for controlling the GL cleaning solution to enter the flow path.
In this embodiment, the second reagent kit contains M washing solutions, and the second reagent kit is provided with an electromagnetic valve V10 for controlling the flow path of the M washing solutions.
In this embodiment, the dual-flow-path liquid detection system further includes a controller connected to the sample injection system, the first liquid level detection sensor, the insensitive sensor, the second liquid level detection sensor, the pump M1, the solenoid valve V11, the sensitive sensor, the pump M2, the solenoid valve V4, and the solenoid valve V10.
It is understood that, in this embodiment, a waste liquid box is provided in the second reagent box.
The working principle of the double-flow-path liquid detection system of the embodiment is as follows:
when a whole test project needs to be performed on the liquid to be tested, the electromagnetic valve V11 is controlled to be opened, the main flow path and the auxiliary flow path are communicated, the pump M2 is started, the liquid to be tested is sucked into the insensitive sensor and the sensitive sensor by the sample introduction system for testing, and the waste liquid enters the waste liquid box after the test is completed.
When the parameters of the insensitive part need to be tested, the electromagnetic valve V11 is controlled to close the secondary flow path, the pump M1 is started, and the liquid to be tested is sucked for detection.
When the main flow path and the secondary flow path need to be maintained, the main flow path and the secondary flow path, the insensitive sensor and the sensitive sensor are maintained by matching according to the performance of the reagent and the characteristics of the sensor.
When the liquid sample to be detected is small in amount and needs to be tested in a whole project, the main flow path project test can be carried out, the electromagnetic valve V11 is controlled to be opened after the test is finished, the main flow path and the secondary flow path are conducted, and the liquid to be detected is pumped to the secondary flow path to test parameters.
The working principle of the dual-flow-path liquid detection system of the present invention is further explained in detail with reference to fig. 1 to 5.
The first step is as follows: in fig. 1, the sampling needle of the sample injection system is lifted, and the operator moves the sample to the sampling needle.
The second step: the pump M1 in fig. 1 starts to rotate to suck the sample, and when the sample reaches the first liquid level detection sensor (i.e., the first liquid level detection sensor) in fig. 1, the sample suction is stopped, the operator removes the sample, and the sampling needle returns to the original position.
The third step: the pump M1 in fig. 1 rotates again, the second liquid level detection sensor (i.e. the second liquid level detection sensor) and the first liquid level detection sensor in fig. 1 start to synchronously detect whether liquid exists in the flow path, when the second liquid level detection sensor and the first liquid level detection sensor in fig. 1 continuously detect liquid, the pump M1 in fig. 1 stops rotating, otherwise, the pump M1 in fig. 1 stops rotating all the time, at this time, the whole liquid detection is judged to be failed, and sampling needs to be performed again.
The fourth step: when the detection in fig. 1 is successful, the insensitive sensor in fig. 1 starts to acquire signals, and when a certain condition is met, the signal acquisition is finished. It should be noted that the "certain condition" means that the signal collected by the insensitive sensor is stable.
The fifth step: after the insensitive sensor in fig. 1 finishes acquiring the signal, the sensitive sensor in fig. 1 starts to acquire the signal, and stops acquiring the signal after the acquired signal reaches a certain condition.
And a sixth step: the pump M2 in fig. 1 starts to rotate to evacuate the liquid from the sensitive sensor in fig. 1, and then the pinch valve V11 in fig. 1 is opened and the pump M2 in fig. 1 starts to rotate a certain number of steps to evacuate the sample from the insensitive sensor in fig. 1 to the sensitive sensor in fig. 1.
The seventh step: when the liquid reaches the sensitive sensor in fig. 1, the sensitive sensor in fig. 1 starts to collect a sample signal, and when the collected signal reaches a certain condition, the sampling is stopped.
The eighth step: after the sampling is completed, the flow path cleaning is started, the pinch valve V11 in FIG. 1 is closed, the electromagnetic valve V4 in FIG. 1 is opened, GL cleaning liquid is pumped to clean the flow path, the pinch valve V11 in FIG. 1 is opened after the pumped cleaning liquid reaches the insensitive sensor, and then the pump M2 in FIG. 1 starts to rotate to pump the GL cleaning liquid into the sensitive sensor to clean the flow path.
The ninth step: when the eighth step is repeated, the solenoid valve V4 and the pinch valve V11 in fig. 1 are closed, then the solenoid valve V10 in fig. 1 is opened, the pump M1 in fig. 1 rotates to pump M cleaning solution to clean the insensitive sensor in fig. 1, and after repeating the steps for several times, the whole operation is finished.
The utility model discloses double flow path liquid detecting system's beneficial effect is: the above technical scheme, the utility model, improved liquid detection efficiency and detection quality, improved the result of use of sensor, prolonged the life of sensor to can avoid the false retrieval problem that arouses because the sensor is too much.
In order to achieve the above object, the present invention further provides a blood gas electrolyte analyzer, which includes the above embodiment, the dual-flow-path liquid detection system, the structure and the working principle of the dual-flow-path liquid detection system have been described in detail above, and are not repeated herein.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (10)
1. A double-flow-path liquid detection system is characterized by comprising a main flow path, an auxiliary flow path, a sample introduction system, a first liquid level detection sensor, an insensitive sensor, a second liquid level detection sensor, a pump M1, an electromagnetic valve V11, a sensitive sensor, a pump M2, a first kit and a second kit;
the first liquid level detection sensor, the insensitive sensor, the second liquid level detection sensor and the pump M1 are sequentially connected in series on the main flow path, the input end of the main flow path is connected with the output end of the sample injection system, the electromagnetic valve V11, the sensitive sensor and the pump M2 are sequentially connected in series on the secondary flow path, the input end of the electromagnetic valve V11 is connected between the second liquid level detection sensor and the pump M1, the output ends of the main flow path and the secondary flow path are connected with the second reagent kit, and the second reagent kit and the first reagent kit are sequentially connected in series between the output ends of the main flow path and the secondary flow path and the input end of the sample injection system;
the sample injection system comprises a support, a stepping motor, a zero position detection mechanism, a track disc, a driving disc, a sample injection needle and a needle frame, wherein the stepping motor is arranged on the support, the zero position detection mechanism is arranged at one end of the stepping motor, the track disc is arranged on the support and is positioned at the other end of the stepping motor, the driving disc is arranged on the track disc and is linked with the stepping motor, the upper end of the sample injection needle is rotatably arranged on the track disc, the lower end of the sample injection needle is telescopically arranged in the needle frame, and the upper end of the needle frame is rotatably connected with the driving disc; the zero position detection mechanism comprises a zero position detection sensor and a detection coded disc, wherein the zero position detection sensor is arranged on the bracket, and the detection coded disc is connected with an output shaft of the stepping motor;
when the stepping motor moves, the driving disc is driven to move along the periphery of the track disc, and the driving disc drives the needle frame to move around the upper end of the sampling needle, so that the sampling needle extends out of or retracts into the needle frame, and the angle of the sampling needle is adjusted.
2. The dual-flow liquid detection system of claim 1, wherein the sample injection needle is 7-shaped, and the upper end of the sample injection needle is rotatably mounted on the track disc through a rotating shaft.
3. The dual flow path liquid detection system of claim 2, wherein a chute is disposed on the needle carriage, and the shaft is disposed in the chute.
4. The dual flow liquid detection system of claim 1, wherein both ends of the orbital disc are provided with a limit groove for limiting the range of rotation of the drive disc.
5. The dual-flow liquid detection system of claim 1, wherein the lower end of the needle holder is provided with a cleaning mechanism for cleaning the sample injection needle; the cleaning mechanism includes: and the sealing ring and the wiping nozzle are arranged in the needle frame and form a sealing cavity.
6. The dual flow fluid testing system of claim 1, wherein said sensor is initially filled with a maintenance fluid.
7. The dual-flow-path liquid detection system according to claim 1, wherein the second kit contains a GL cleaning solution, and the second kit is provided with a solenoid valve V4 for controlling the GL cleaning solution to enter the flow path.
8. The dual-flow liquid detection system according to claim 7, wherein the second reagent kit contains M washing liquid, and the second reagent kit is provided with a solenoid valve V10 for controlling the M washing liquid to enter the flow path.
9. The dual fluid flow detection system of claim 8, further comprising a controller connected to the sample injection system, the first fluid level detection sensor, the insensitive sensor, the second fluid level detection sensor, the pump M1, the solenoid valve V11, the sensitive sensor, the pump M2, the solenoid valve V4, and the solenoid valve V10.
10. A blood gas electrolyte analyzer, characterized in that it comprises a dual-flow liquid detection system according to any of claims 1 to 9.
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| CN114167044A (en) * | 2021-12-20 | 2022-03-11 | 梅州康立高科技有限公司 | Double-flow-path liquid detection system and blood gas electrolyte analyzer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114167044A (en) * | 2021-12-20 | 2022-03-11 | 梅州康立高科技有限公司 | Double-flow-path liquid detection system and blood gas electrolyte analyzer |
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