A hemodialysis A liquid quality monitoring system

Abstract

The application discloses a kind of hemodialysis A liquid quality monitoring system, including monitoring cabinet, the inside of the monitoring cabinet is equipped with stepper motor unit, density detection unit, pure water storage unit and conductivity detection unit;The stepper motor unit is connected with conductivity detection unit by first pipeline, the tail end of the second pipeline is connected with density detection unit, the tail end of the third pipeline is connected with pure water storage unit.The combination of the stepper motor unit, each solenoid valve and density detection unit and conductivity detection unit can realize the automatic detection of the quality of the solution to be measured by conductivity and density, reduce the risk of quality management personnel being harmed, and the system pipeline is cleaned by the cleaning program after each inspection, reducing the residue of the solution to be measured in the pipeline, improving the accuracy of the next detection, in addition, the measured data can be stored in SD card or PC end, which can improve the traceability of data.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical dialysis, in particular to a hemodialysis A liquid quality monitoring system. BACKGROUND

[0002] With the development of medical technology and the continuous improvement of people's living standards, the management of medical quality in hospitals is becoming more and more standardized, and dialysis patients have higher requirements for dialysis quality. Therefore, the importance of quality control is becoming more and more prominent, but in recent years, the concentrated liquid supply system manufactured by the manufacturer is not perfect or has no quality monitoring for the concentrated liquid supply. The traditional method of clinical department is to manually measure the density of the prepared concentrated liquid as a quality monitoring index. Manual measurement has large error and uneven data, and there is no relevant international standard, which has many problems.

[0003] The defects of the existing medical dialysis equipment are:

[0004] 1. Patent document CN208770507U discloses a dialysis concentrated liquid automatic liquid preparation and supply system, which comprises a liquid preparation system and a liquid supply system, and is provided with a PLC as a controller. The automatic liquid preparation and supply system is provided with a stirring pump in the liquid preparation system and uses liquid circulation flushing to stir, uses a liquid level detector to monitor the liquid level in real time, uses a temperature probe and a heating rod to accurately control the dissolution temperature, and uses an electric conductivity instrument probe to detect the electric conductivity of the prepared liquid in real time, so as to accurately and stably control the concentration of the prepared liquid. The supply port of the liquid supply system is specially structured, so that there is no cleaning dead angle during disinfection and flushing, and the cleaning effect is more thorough. Therefore, the utility model has the characteristics of reasonable system setting, high automation, simple operation of liquid preparation and disinfection flushing, stable liquid concentration, and resistance to bacterial pollution, and can continuously provide dialysis concentrated liquid meeting the national standard. The liquid supply system considers the influence of density on the quality of concentrated liquid when preparing liquid, so that the quality of concentrated liquid during preparation is difficult to be optimized and monitored, and the data prepared each time is difficult to be effectively saved, and it is difficult to realize data traceability tracking;

[0005] 2. Patent document CN105358191B discloses a sensor for a dialysis machine and a sensing method, "including an additive source (140) to introduce an additive such as bicarbonate into a reverse osmosis water stream (302). The machine (100) can include a sensor (150) in fluid communication with the additive introduction point (144) capable of measuring the conductivity or similar property of the solution. During a first period of time in which the additive is actively introduced into the reverse osmosis water stream (302), the sensor (150) can measure a relatively high conductivity value (306). During a second period of time in which no additive is introduced into the reverse osmosis water stream (302), the sensor (150) can measure a relatively low conductivity value (310). The dialysis machine (100) can include a controller (190) that processes these measurements to aid in the control and operation of the machine (100)", the control system introduces an additive such as bicarbonate into the reverse osmosis water stream passing through the machine to adjust the properties of the dialysate according to the assumed dialysis treatment, if the controller determines that the reverse osmosis water is not acceptable for performing the dialysis treatment, the protection measure cannot be started without adding executable software instructions, so that the detection operation of the conductivity cannot be automatically and smoothly carried out;

[0006] 3. Patent document CN202975171U discloses a dialysate conductivity detection device in a hemodialysis machine, "including: a plurality of carbon rings connected in series to form a carbon ring group; a first connecting part and a second connecting part respectively connected to the two ends of the carbon ring group; a temperature sensor arranged on the second connecting part for detecting the temperature of the dialysate; a detection circuit board for sampling the temperature and resistance of the dialysate flowing through the carbon ring group and calculating the conductivity of the dialysate, and the detection circuit board is electrically connected to the two ends of the carbon ring group and the temperature sensor through wires; a detection circuit fixing part connected between the first connecting part and the second connecting part and arranged separately from the carbon ring group, and a containing groove is arranged on the detection circuit fixing part, and the detection circuit board is sealed and fixed in the containing groove. The carbon ring group is externally connected, so that the dialysate that leaks through the carbon ring group can be promptly discharged, and the temperature sensor cannot be short-circuited, thereby improving the reliability and service life of the utility model", the detection device samples the temperature and resistance of the dialysate flowing through the carbon ring pipeline and calculates the conductivity of the dialysate, mainly solving the problem of internal leakage of the detection device, and not considering the cleaning, soaking and disinfection treatment of the internal carbon ring pipeline, so that the precision of the detection result is poor;

[0007] 4. Patent document CN203458639U discloses an A, B concentrate monitoring control system for hemodialysis, comprising three processors, the first processor and the second processor are used to monitor the conductivity of B concentrate and A concentrate respectively, and the first processor and the second processor are used to monitor the motor stall condition of B concentrate pump and A concentrate pump, thereby improving the reliability and stability of A concentrate and B concentrate monitoring control of hemodialysis machine, and avoiding the situation that single processor cannot work normally when it appears dead or other unexpected situation, the gap system cannot consider how to deal with the situation when crystallization causes stall or detection data is inaccurate. SUMMARY

[0008] The purpose of the present application is to provide a hemodialysis A liquid quality monitoring system to solve the problems raised in the background art.

[0009] To achieve the above purpose, the present application provides the following technical scheme: a hemodialysis A liquid quality monitoring system, comprising a monitoring cabinet, a stepping motor unit, a density detection unit, a pure water storage unit and a conductivity detection unit, the inside of the monitoring cabinet is provided with the stepping motor unit, the density detection unit, the pure water storage unit and the conductivity detection unit;

[0010] The inside of the stepping motor unit is connected with a first pipeline, the stepping motor unit is connected with the conductivity detection unit through the first pipeline, the surface of the first pipeline is connected with a second pipeline, the tail end of the second pipeline is connected with the density detection unit, the surface of the first pipeline is provided with a third pipeline, the tail end of the third pipeline is connected with the pure water storage unit;

[0011] The inside of the density detection unit is connected with a fourth pipeline, the surface of the fourth pipeline is provided with two groups of branch pipelines, one group of branch pipelines is connected with the pure water storage unit at the tail end, the other group of branch pipelines is connected with the conductivity detection unit at the tail end, the inside of the conductivity detection unit is connected with a sixth pipeline, the tail end of the sixth pipeline is connected with a concentrate water inlet, the inside of the pure water storage unit is connected with a fifth pipeline, the tail end of the fifth pipeline is connected with a pure water inlet, the surface of the first pipeline is provided with a seventh pipeline, and the tail end of the seventh pipeline is connected with a purification unit.

[0012] Preferably, the surface of the third pipeline is provided with a fifth electromagnetic valve V5, the surface of the first pipeline is provided with a first electromagnetic valve V1, a second electromagnetic valve V2 and a third electromagnetic valve V3, the surface of the second pipeline is provided with a sixth electromagnetic valve V6, the surface of the branch pipeline connected with the pure water storage unit is provided with a seventh electromagnetic valve V7, the surface of the branch pipeline connected with the conductivity detection unit is provided with a ninth electromagnetic valve V9, the surface of the fifth pipeline is provided with a fourth electromagnetic valve V4, the surface of the sixth pipeline is provided with an initial electromagnetic valve V0, the surface of the seventh pipeline is provided with a tenth electromagnetic valve V10, the surface of the fourth pipeline is provided with an eighth electromagnetic valve V8, the eighth electromagnetic valve V8 is located on the surface of the fourth pipeline inside the density detection unit, the tail end of the fourth pipeline is connected with a waste water treatment interface, and the initial electromagnetic valve V0, the first electromagnetic valve V1, the second electromagnetic valve V2, the third electromagnetic valve V3, the fourth electromagnetic valve V4, the fifth electromagnetic valve V5, the sixth electromagnetic valve V6, the seventh electromagnetic valve V7, the eighth electromagnetic valve V8, the ninth electromagnetic valve V9 and the tenth electromagnetic valve V10 constitute an electromagnetic valve unit.

[0013] Preferably, the stepping motor unit comprises a storage cylinder, a first infrared water level meter, a stepping motor and a suction pump, the inner wall of the storage cylinder is provided with the first infrared water level meter, the surface of the storage cylinder is provided with the suction pump, the surface of the suction pump is provided with the stepping motor, the input end of the suction pump is connected with the tail end of the first pipeline through a water pipe, and the output end of the suction pump is connected with the storage cylinder through a water pipe.

[0014] Preferably, the density detection unit comprises a detection cylinder, a pressure sensor and a second infrared water level meter, the detection cylinder is located below the storage cylinder, the inner wall of the detection cylinder is provided with the second infrared water level meter, and the bottom wall of the detection cylinder is provided with the pressure sensor.

[0015] Preferably, the conductivity detection unit comprises a detection container, a third infrared water level meter, a conductivity sensor and a temperature sensor, the detection container is located on one side of the storage cylinder, the inner wall of the detection container is provided with the third infrared water level meter, the inside of the detection container is provided with the conductivity sensor, and the inside of the conductivity sensor is provided with the temperature sensor, and the surface of the detection container is provided with an auxiliary cleaning module.

[0016] Preferably, the pure water detection unit comprises a cleaning water bucket, and the cleaning water bucket is located on one side of the detection cylinder.

[0017] Preferably, the auxiliary cleaning module comprises an ultrasonic transducer, a vibration detection chip and an alarm, the surface of the detection container is provided with the ultrasonic transducer, the vibration detection chip and the alarm, the vibration detection chip is located between the ultrasonic transducer and the alarm, and the ultrasonic transducer, the vibration detection chip and the alarm are electrically connected.

[0018] Preferably, the surface of the monitoring cabinet is provided with an operation screen and a cabinet door, and the operation screen is located above the cabinet door, the operation screen is electrically connected with the stepping motor, the pressure sensor, the conductivity sensor and the temperature sensor, and the back of the monitoring cabinet is provided with a heat dissipation window.

[0019] Preferably, the purification unit comprises an ultraviolet lamp and a photocatalyst mesh plate, and the inner wall of the tail end of the seventh pipeline is provided with the ultraviolet lamp plate and the photocatalyst mesh plate, and the ultraviolet lamp is located on one side of the photocatalyst mesh plate.

[0020] Preferably, the working steps of the system are as follows:

[0021] S1, before the concentrated liquid A is detected by the system in the automatic mode, the initial electromagnetic valve V0 is opened, the water injection is delayed for 15 seconds or the water injection is stopped until the liquid level in the detection container reaches W0, then the initial electromagnetic valve V0 is closed, and the system is static for 5 seconds, the conductivity sensor calculates the conductivity D1 of the liquid (unit: mS / cm), the first electromagnetic valve V1, the second electromagnetic valve V2 and the third electromagnetic valve V3 are opened, the stepping motor is operated at 60 L / h in the forward rotation mode to suck water, the water suction is stopped until the liquid level in the storage cylinder reaches W1 or the stepping motor is operated in the forward rotation mode to suck water for 15 seconds, then the forward rotation of the stepping motor is stopped, the first electromagnetic valve V1, the second electromagnetic valve V2 and the third electromagnetic valve V3 are closed, the third electromagnetic valve V3 and the sixth electromagnetic valve V6 are opened, the stepping motor is operated at 60 L / h in the reverse rotation mode to discharge water, the water discharge is stopped until the liquid level in the detection cylinder reaches W2 or the stepping motor is operated in the reverse rotation mode to discharge water for 15 seconds, then the reverse rotation of the stepping motor is stopped, the third electromagnetic valve V3 and the sixth electromagnetic valve V6 are closed, and the system is static for 5 seconds, the pressure sensor calculates the weight G1 of the liquid (unit: g), and the density M1 of the liquid is calculated as M1=G1 / 250 (unit: g / mL), the operation screen displays the data of the conductivity D1, the weight G1 and the density M1, then the eighth electromagnetic valve V8 is opened, the water discharge is stopped for 10 seconds, the first electromagnetic valve V1, the second electromagnetic valve V2, the third electromagnetic valve V3, the fifth electromagnetic valve V5, the sixth electromagnetic valve V6, the seventh electromagnetic valve V7, the eighth electromagnetic valve V8 and the ninth electromagnetic valve V9 are opened, the stepping motor is operated in the reverse rotation mode to discharge water for 15 seconds, the tenth electromagnetic valve V10 is opened for 5 seconds, then the initial electromagnetic valve V0, the first electromagnetic valve V1, the second electromagnetic valve V2, the third electromagnetic valve V3, the fourth electromagnetic valve V4, the fifth electromagnetic valve V5, the sixth electromagnetic valve V6, the seventh electromagnetic valve V7, the eighth electromagnetic valve V8, the ninth electromagnetic valve V9 and the tenth electromagnetic valve V10 are closed, thereby the conductivity and the density data of the concentrated liquid A are obtained, the quality of the to-be-detected solution is judged, and the automatic detection of the to-be-detected solution is realized by the combined control of the stepping motor unit, the electromagnetic valve unit, the density detection unit and the conductivity detection unit, the manual quality control is replaced, the conductivity and the density data of the concentrated liquid A are automatically recorded and saved according to the SOP requirements.

[0022] S2, when the automatic mode related parts fail, manually add a certain amount of liquid into the detection cylinder and the detection container, manually input the weight G2 measured by the pressure sensor in g, manually input the conductivity D2 of the liquid measured by the conductivity sensor in mS / cm, manually input the liquid volume A1 in mL, calculate the liquid density M2 = G2 / A1 in g / mL and display on the surface of the operation screen (16), and realize standby quality monitoring;

[0023] S3, start the stepper motor and open the water injection by the fourth electromagnetic valve V4, and after 15 seconds of water injection or the liquid level in the cleaning water tank reaches W3, the fourth electromagnetic valve V4 is closed to stop water injection, the second electromagnetic valve V2, the third electromagnetic valve V3 and the fifth electromagnetic valve V5 are opened, the stepper motor drives the suction pump to run at 60 L / h to suck water, so that the water in the storage cylinder is sucked to W1 position for 5 seconds, or the stepper motor is stopped after 35 seconds of forward rotation to suck water, then the fifth electromagnetic valve V5 is closed, the first electromagnetic valve V1 is opened, the stepper motor is reversed at 60 L / h to drain water, after 20 seconds, the ninth electromagnetic valve V9 is opened, the stepper motor is stopped, after 10 seconds, the second electromagnetic valve V2 is closed, the fifth electromagnetic valve V5, the sixth electromagnetic valve V6, the seventh electromagnetic valve V7 and the tenth electromagnetic valve V10 are opened, the stepper motor is reversed at 60 L / h to drain water for 15 seconds and then stopped, after 10 seconds, the eighth electromagnetic valve V8 is opened, after 10 seconds, the second electromagnetic valve V2 is opened, after 5 seconds, the first electromagnetic valve V1, the second electromagnetic valve V2 and the third electromagnetic valve V3 are closed, the fifth electromagnetic valve V5, the sixth electromagnetic valve V6, the seventh electromagnetic valve V7, the eighth electromagnetic valve V8, the ninth electromagnetic valve V9 and the tenth electromagnetic valve V10 are closed, to realize automatic cleaning after single measurement to ensure the accuracy of the next detection result;

[0024] S4, when the soaking disinfection treatment is performed, the first electromagnetic valve V1, the second electromagnetic valve V2 and the third electromagnetic valve V3 are opened, the stepper motor runs in the positive rotation mode at 60L / h to suck liquid, the liquid level in the storage cylinder reaches W1, and then the position is extended for seconds or the stepper motor stops the positive rotation of the water suction after 35 seconds, and then the stepper motor is static for 10 seconds, the second electromagnetic valve V2 is closed, the sixth electromagnetic valve V6 is opened, the stepper motor runs in the reverse rotation mode at 60L / h to drain water, so that the liquid level in the detection cylinder reaches W2 position or the stepper motor stops the reverse rotation of the water drainage after 20 seconds, then the sixth electromagnetic valve V6 and the first electromagnetic valve V1 are closed, the second electromagnetic valve V2 and the fifth electromagnetic valve V5 are opened, the stepper motor starts to run in the reverse rotation mode to drain water, and then stops running after 15 seconds, and is static for 10 seconds, the first electromagnetic valve V1, the third electromagnetic valve V3, the sixth electromagnetic valve V6, the seventh electromagnetic valve V7, the eighth electromagnetic valve V8, the ninth electromagnetic valve V9 and the tenth electromagnetic valve V10 are opened, and then the first electromagnetic valve V1, the second electromagnetic valve V2 and the third electromagnetic valve V3 are closed after 5 seconds, and the fifth electromagnetic valve V5, the sixth electromagnetic valve V6, the seventh electromagnetic valve V7, the eighth electromagnetic valve V8, the ninth electromagnetic valve V9 and the tenth electromagnetic valve V10 are closed;

[0025] S5, in order to reduce the crystallization phenomenon of the conductivity sensor in the use process and further ensure the detection accuracy of the conductivity sensor, the ultrasonic transducer is used to provide ultrasonic cleaning treatment for the surface of the conductivity sensor in the detection container, when the ultrasonic transducer fails, the vibration detection chip fails to detect the corresponding vibration frequency of the liquid in the detection container, at this time, the alarm alarm reminds the operator that the ultrasonic transducer needs to be replaced and repaired in time.

[0026] Compared with the prior art, the beneficial effects of the present application are:

[0027] 1. The conductivity sensor and the pressure sensor are used to detect the conductivity and density of the solution to be measured respectively, the quality of the solution to be measured is judged according to the conductivity and density of the solution to be measured, the conductivity and density data of the solution to be measured are combined, the shortcomings in quality detection caused by single conductivity detection are optimized, and the hospital medical quality and medical safety are further improved.

[0028] 2. The combination control of the stepper motor unit, the electromagnetic valve unit, the density detection unit and the conductivity detection unit is used to realize automatic detection of the solution to be measured, reduce the necessity of manual measurement, improve the management efficiency, reduce the possibility of contact between the quality management personnel and the concentrated A liquid in the acidic state, and further reduce the risk of injury. In addition, when the automatic detection fails, manual measurement can also be realized, and the measurement data can be stored in the SD card and the PC memory, the data traceability is increased, the data saving path is not affected even in the manual operation mode, and the normal data saving is ensured.

[0029] 3. The application automatically performs a cleaning program after each detection is completed, the system pipeline is cleaned, the residual of the detection liquid is reduced, and the accuracy of the next detection is ensured, in addition, the disinfection program of the system can be regularly disinfected, the aggregation of bacteria and other impurities is inhibited, and the entry of external bacteria into the system is reduced, and the health of the monitoring system is ensured.

[0030] 4. The application is provided with an auxiliary cleaning module, and the surface of the conductivity sensor is provided with ultrasonic cleaning treatment by the ultrasonic transducer, when the ultrasonic transducer fails, the vibration detection chip fails to detect vibration in the starting state of the ultrasonic transducer, the alarm alarm reminds the operator to replace and repair in time. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall water route structure of the application;

[0032] Figure 2 It is a schematic diagram of the installation structure of the stepping motor unit, the density detection unit, the conductivity detection unit and the pure water storage unit of the application;

[0033] Figure 3 It is a right view of the monitoring cabinet of the application;

[0034] Figure 4 It is a rear view of the monitoring cabinet of the application;

[0035] Figure 5 It is a front view of the monitoring cabinet of the application;

[0036] Figure 6 It is a schematic diagram of the conductivity detection unit structure of the application;

[0037] Figure 7 It is a schematic diagram of the stepping motor unit structure of the application;

[0038] Figure 8 It is a schematic diagram of the density detection unit structure of the application.

[0039] In the figure: 1, storage cylinder; 2, first infrared water level gauge; 3, stepping motor; 4, suction pump; 5, detection cylinder; 6, pressure sensor; 7, second infrared water level gauge; 8, detection container; 9, third infrared water level gauge; 10, conductivity sensor; 11, temperature sensor; 12, ultrasonic transducer; 13, vibration detection chip; 14, alarm; 15, cleaning bucket; 16, operation screen; 17, heat dissipation window; 18, concentrated liquid inlet; 19, pure water inlet; 20, waste water treatment interface. DETAILED DESCRIPTION

[0040] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0041] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] Please refer to Figures 1-8 The present application provides an embodiment: a hemodialysis A liquid quality monitoring system, comprising a monitoring cabinet, a stepping motor unit, a density detection unit, a pure water storage unit and a conductivity detection unit, the inside of the monitoring cabinet is provided with the stepping motor unit, the density detection unit, the pure water storage unit and the conductivity detection unit;

[0044] The inside of the stepping motor unit is connected with a first pipeline, the stepping motor unit is connected with the conductivity detection unit through the first pipeline, the surface of the first pipeline is connected with a second pipeline, the tail end of the second pipeline is connected with the density detection unit, the surface of the first pipeline is provided with a third pipeline, the tail end of the third pipeline is connected with the pure water storage unit;

[0045] The fourth pipeline is internally connected with the density detection unit, the surface of the fourth pipeline is mounted with two groups of branch pipelines, the tail end of one group of branch pipelines is connected with the pure water storage unit, the tail end of the other group of branch pipelines is connected with the conductivity detection unit, the sixth pipeline is internally connected with the conductivity detection unit, the tail end of the sixth pipeline is connected with the concentrated liquid water inlet 18, the fifth pipeline is internally connected with the pure water storage unit, the tail end of the fifth pipeline is connected with the pure water water inlet 19, the surface of the first pipeline is mounted with the seventh pipeline, and the tail end of the seventh pipeline is connected with the purification unit.

[0046] The surface of the third pipeline is mounted with the fifth electromagnetic valve V5, the surface of the first pipeline is connected with the first electromagnetic valve V1, the second electromagnetic valve V2 and the third electromagnetic valve V3, the surface of the second pipeline is mounted with the sixth electromagnetic valve V6, the surface of the branch pipeline connected with the pure water storage unit is mounted with the seventh electromagnetic valve V7, the surface of the branch pipeline connected with the conductivity detection unit is mounted with the ninth electromagnetic valve V9, the surface of the fifth pipeline is mounted with the fourth electromagnetic valve V4, the surface of the sixth pipeline is mounted with the initial electromagnetic valve V0, the surface of the seventh pipeline is mounted with the tenth electromagnetic valve V10, the surface of the fourth pipeline is mounted with the eighth electromagnetic valve V8, and the eighth electromagnetic valve V8 is located on the surface of the fourth pipeline inside the density detection unit, the tail end of the fourth pipeline is connected with the waste water treatment interface 20, and the initial electromagnetic valve V0, the first electromagnetic valve V1, the second electromagnetic valve V2, the third electromagnetic valve V3, the fourth electromagnetic valve V4, the fifth electromagnetic valve V5, the sixth electromagnetic valve V6, the seventh electromagnetic valve V7, the eighth electromagnetic valve V8, the ninth electromagnetic valve V9 and the tenth electromagnetic valve V10 constitute an electromagnetic valve unit.

[0047] Further, through the matching between the electromagnetic valves in the electromagnetic valve unit, the automatic operation of the monitoring system can be assisted, the necessity of manually dredging and closing each pipeline in the monitoring system is reduced, the labor cost is reduced, and the management efficiency is improved.

[0048] The stepping motor unit comprises a storage cylinder 1, a first infrared water level meter 2, a stepping motor 3 and a suction pump 4, the inner wall of the storage cylinder 1 is mounted with the first infrared water level meter 2, the surface of the storage cylinder 1 is mounted with the suction pump 4, the surface of the suction pump 4 is mounted with the stepping motor 3, the input end of the suction pump is connected with the tail end of the first pipeline through a water pipe, and the output end of the suction pump is connected with the storage cylinder 1 through a water pipe.

[0049] Further, through the forward rotation and reverse rotation of the stepping motor 3, the forward rotation and reverse rotation of the impeller inside the suction pump 4 can be driven, thereby assisting the stepping motor unit to achieve the purpose of forward rotation water suction and reverse rotation water discharge. Through the detection of the liquid level height inside the storage cylinder 1 by the first infrared water level meter 2, when the liquid level height inside the storage cylinder 1 reaches W1, the related electromagnetic valve can be closed in time to ensure the constant or delayed closing reaction of the detected liquid weight, so that the contact surface of the soaking surface and the cleaning surface is higher than the concentrated liquid, and the effectiveness of the cleaning and disinfection operation is ensured.

[0050] The density detection unit includes a detection cylinder 5, a pressure sensor 6, and a second infrared water level meter 7. The detection cylinder 5 is located below the storage cylinder 1, the inner wall of the detection cylinder 5 is provided with the second infrared water level meter 7, and the bottom wall of the detection cylinder 5 is provided with the pressure sensor 6.

[0051] Further, the weight of the concentrated liquid inside the detection cylinder 5 can be measured by the pressure sensor 6, and the volume of the concentrated liquid inside the detection cylinder 5 can be measured by the second infrared water level meter 7, so that the density data of the detected concentrated liquid can be calculated conveniently.

[0052] The conductivity detection unit includes a detection container 8, a third infrared water level meter 9, a conductivity sensor 10, and a temperature sensor 11. The detection container 8 is located on one side of the storage cylinder 1, the inner wall of the detection container 8 is provided with the third infrared water level meter 9, the inside of the detection container 8 is provided with the conductivity sensor 10, and the inside of the conductivity sensor 10 is provided with the temperature sensor 11.

[0053] Further, the conductivity value of the concentrated liquid inside the detection container 8 is measured by the conductivity sensor 10 as an index of the detection of the concentrated liquid quality parameter, the temperature value of the concentrated liquid is detected by the temperature sensor 11, wherein the temperature affects the solution conductivity and the parameter of the speed of dissolving A powder in water, which can also be used as a secondary parameter for detection, and the liquid level height of the concentrated liquid inside the detection container 8 is measured by the third infrared water level meter 9, thereby serving as a condition for triggering the closing of the initial electromagnetic valve V0.

[0054] The pure water detection unit includes a cleaning water bucket 15, which is located on one side of the detection cylinder 5.

[0055] Further, the cleaning water bucket 15 provides necessary storage space for the access and storage of pure water.

[0056] An auxiliary cleaning module is installed on the surface of the detection container 8, which includes an ultrasonic transducer 12, a vibration detection chip 13, and an alarm 14. The ultrasonic transducer 12, the vibration detection chip 13, and the alarm 14 are installed on the surface of the detection container 8, the vibration detection chip 13 is located between the ultrasonic transducer 12 and the alarm 14, and the ultrasonic transducer 12, the vibration detection chip 13, and the alarm 14 are electrically connected.

[0057] Further, the surface of the conductivity sensor 10 is provided with ultrasonic cleaning treatment by the ultrasonic transducer 12, when the ultrasonic transducer 12 fails, the alarm 14 alarms to remind the operator to replace and repair in time when the vibration detection chip 13 fails to detect the vibration in the starting state of the ultrasonic transducer 12.

[0058] The surface of the monitoring cabinet is provided with an operation screen 16 and a cabinet door, and the operation screen 16 is located above the cabinet door, the operation screen 16 is electrically connected with the stepping motor 3, the pressure sensor 6, the conductivity sensor 10 and the temperature sensor 11, and the back of the monitoring cabinet is provided with a heat dissipation window 17.

[0059] Further, the operation screen 16 is convenient for displaying the relevant monitoring data in the monitoring cabinet, and the operation screen 16 can be provided with a plug-in interface, so as to facilitate the storage of data in the SD card or PC end, and the heat dissipation window 17 is convenient for ventilation and heat dissipation in the monitoring cabinet.

[0060] The purification unit comprises an ultraviolet lamp and a photocatalyst net plate, the inner wall of the tail end of the seventh pipeline is provided with the ultraviolet lamp plate and the photocatalyst net plate, and the ultraviolet lamp is located on one side of the photocatalyst net plate.

[0061] Further, through the cooperation of the ultraviolet lamp and the photocatalyst plate, the air at the tail end of the seventh pipeline can be in a purified state, thereby protecting the safety of the internal pipeline of the system.

[0062] Working principle:

[0063] S1, before the concentrated liquid A is detected in the automatic mode of the system, the initial electromagnetic valve V0 is opened, the water injection is delayed for 15 seconds or the liquid level in the detection container 8 is W0, the initial electromagnetic valve V0 is closed, and the static state lasts for 5 seconds. The conductivity sensor 10 calculates the liquid conductivity D1 (unit: mS / cm). The first electromagnetic valve V1, the second electromagnetic valve V2, and the third electromagnetic valve V3 are opened. The stepping motor 3 is operated in the positive rotation mode at 60 L / h to suck water. The liquid level in the storage cylinder 1 is W1 or the stepping motor 3 is operated in the positive rotation mode to suck water for 15 seconds, and then the stepping motor 3 is stopped. The first electromagnetic valve V1, the second electromagnetic valve V2, and the third electromagnetic valve V3 are closed. The V3 and V6 are opened. The stepping motor 3 is operated in the negative rotation mode at 60 L / h to discharge water. The liquid level in the detection cylinder 5 is W2 or the stepping motor 3 is operated in the negative rotation mode to discharge water for 15 seconds, and then the stepping motor 3 is stopped. The third electromagnetic valve V3 and the sixth electromagnetic valve V6 are closed. The static state lasts for 5 seconds. The pressure sensor 6 calculates the liquid weight G1 (unit: g). The liquid density M1 = G1 / 250 (unit: g / mL) is calculated. The operation screen 16 displays the data of the conductivity D1, the weight G1, and the density M1. Then, the eighth electromagnetic valve V8 is opened. The water is discharged for 10 seconds. The first electromagnetic valve V1, the second electromagnetic valve V2, the third electromagnetic valve V3, the fifth electromagnetic valve V5, the sixth electromagnetic valve V6, the seventh electromagnetic valve V7, the eighth electromagnetic valve V8, and the ninth electromagnetic valve V9 are opened. The stepping motor 3 is operated in the negative rotation mode for 15 seconds. The tenth electromagnetic valve V10 is opened for 5 seconds. Then, the initial electromagnetic valve V0, the first electromagnetic valve V1, the second electromagnetic valve V2, the third electromagnetic valve V3, the fourth electromagnetic valve V4, the fifth electromagnetic valve V5, the sixth electromagnetic valve V6, the seventh electromagnetic valve V7, the eighth electromagnetic valve V8, the ninth electromagnetic valve V9, and the tenth electromagnetic valve V10 are closed. Thus, the conductivity and the density data of the concentrated A liquid are obtained. The quality of the to-be-detected solution is judged. In addition, through the combined control of the stepping motor unit, the electromagnetic valve unit, the density detection unit, and the conductivity detection unit, the automatic detection of the to-be-detected solution is realized. The manual quality control is replaced. According to the SOP requirement, the conductivity and the density data of the concentrated A liquid are automatically recorded and saved.

[0064] S2, when the automatic mode related parts fail, the quantitative liquid is manually taken to the detection cylinder 5 and the detection container 8. The weight G2 (unit: g) measured by the pressure sensor 6 is manually input. The liquid conductivity D2 (unit: mS / cm) measured by the conductivity sensor 10 is manually input. The liquid capacity A1 (unit: mL) is manually input. The liquid density M2 = G2 / A1 (unit: g / mL) is calculated and displayed on the surface of the operation screen 16. The standby quality monitoring is realized.

[0065] S3, the fourth solenoid valve V4 is opened, and the water injection is performed for 15 seconds or until the liquid level in the cleaning water tank 15 reaches W3. Then, the fourth solenoid valve V4 is closed, the water injection is stopped, the second solenoid valve V2, the third solenoid valve V3 and the fifth solenoid valve V5 are opened, the stepping motor 3 is operated in the forward direction at a speed of 60 L / h to drive the suction pump 4 to suck water, so that the liquid level in the storage cylinder 1 reaches W1, and then the liquid level is maintained for 5 seconds or the stepping motor 3 is operated in the forward direction to suck water for 35 seconds, and then the stepping motor 3 is stopped. Then, the fifth solenoid valve V5 is closed, the first solenoid valve V1 is opened, the stepping motor 3 is operated in the reverse direction at a speed of 60 L / h to discharge water, and after 20 seconds, the ninth solenoid valve V9 is opened, the stepping motor 3 is stopped, and after 10 seconds, the second solenoid valve V2 is closed, the fifth solenoid valve V5, the sixth solenoid valve V6, the seventh solenoid valve V7 and the tenth solenoid valve V10 are opened, the stepping motor 3 is operated in the reverse direction at a speed of 60 L / h to discharge water for 15 seconds, and then the stepping motor 3 is stopped. After 10 seconds, the eighth solenoid valve V8 is opened, after 10 seconds, the second solenoid valve V2 is opened, after 5 seconds, the first solenoid valve V1, the second solenoid valve V2 and the third solenoid valve V3 are closed, the fifth solenoid valve V5, the sixth solenoid valve V6, the seventh solenoid valve V7, the eighth solenoid valve V8, the ninth solenoid valve V9 and the tenth solenoid valve V10 are closed, and the automatic cleaning after single measurement is realized to ensure the accuracy of the next detection result.

[0066] S4, when the soaking disinfection treatment is performed, the first solenoid valve V1, the second solenoid valve V2 and the third solenoid valve V3 are opened, the stepping motor 3 is operated in the forward direction at a speed of 60 L / h to suck liquid, the liquid level in the storage cylinder 1 reaches W1, and then the liquid level is maintained for a certain period of time or the stepping motor 3 is operated in the forward direction to suck water for 35 seconds, and then the stepping motor 3 is stopped. After 10 seconds, the second solenoid valve V2 is closed, the sixth solenoid valve V6 is opened, the stepping motor 3 is operated in the reverse direction at a speed of 60 L / h to discharge water, so that the liquid level in the detection cylinder 5 reaches W2 or the stepping motor 3 is operated in the reverse direction to discharge water for 20 seconds, and then the stepping motor 3 is stopped. Then, the sixth solenoid valve V6 and the first solenoid valve V1 are closed, the second solenoid valve V2 and the fifth solenoid valve V5 are opened, the stepping motor 3 is operated in the reverse direction to discharge water, and after 15 seconds, the stepping motor 3 is stopped. After 10 seconds, the first solenoid valve V1, the third solenoid valve V3, the sixth solenoid valve V6, the seventh solenoid valve V7, the eighth solenoid valve V8, the ninth solenoid valve V9 and the tenth solenoid valve V10 are opened, and after 5 seconds, the first solenoid valve V1, the second solenoid valve V2 and the third solenoid valve V3 are closed. The fifth solenoid valve V5, the sixth solenoid valve V6, the seventh solenoid valve V7, the eighth solenoid valve V8, the ninth solenoid valve V9 and the tenth solenoid valve V10 are closed.

[0067] S5, in order to reduce the crystallization phenomenon of the conductivity sensor 10 in use and further ensure the detection accuracy of the conductivity sensor 10, the ultrasonic transducer 12 is used to provide ultrasonic cleaning treatment for the surface of the conductivity sensor 10 inside the detection container 8. When the ultrasonic transducer 12 fails and the ultrasonic transducer 12 starts, the vibration detection chip 13 fails to detect the corresponding vibration frequency of the liquid inside the detection container 8. At this time, the alarm 14 alarms to remind the operator that the ultrasonic transducer 12 has failed and needs to be replaced and repaired in time.

[0068] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the application can be implemented in other particular forms without departing from the spirit or essential characteristics of the application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being defined by the appended claims rather than by the above description, and it is therefore intended that all changes and modifications that come within the meaning and range of equivalency of the claims are resolvable thereunder. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A hemodialysis fluid A quality monitoring system, comprising a monitoring cabinet, a stepper motor unit, a density detection unit, a pure water storage unit, and a conductivity detection unit, characterized in that: The monitoring cabinet is equipped with a stepper motor unit, a density detection unit, a pure water storage unit, and a conductivity detection unit. The stepper motor unit is internally connected to a first pipe, and the stepper motor unit is connected to a conductivity detection unit through the first pipe. A second pipe is connected to the surface of the first pipe, and a density detection unit is connected to the tail end of the second pipe. A third pipe is installed on the surface pipe of the first pipe, and a pure water storage unit is connected to the tail end of the third pipe. The density detection unit is internally connected to a fourth pipe, and the surface of the fourth pipe is equipped with two sets of branch pipes. The tail end of one set of branch pipes is connected to the pure water storage unit, and the tail end of the other set of branch pipes is connected to the conductivity detection unit. The conductivity detection unit is internally connected to a sixth pipe, and the tail end of the sixth pipe is connected to a concentrate inlet (18). The pure water storage unit is internally connected to a fifth pipe, and the tail end of the fifth pipe is connected to a pure water inlet (19). The surface of the first pipe is equipped with a seventh pipe, and the tail end of the seventh pipe is connected to a purification unit. The conductivity detection unit includes a detection container (8), a third infrared water level gauge (9), a conductivity sensor (10), and a temperature sensor (11). The detection container (8) is located on one side of the storage cylinder (1). The third infrared water level gauge (9) is installed on the inner wall of the detection container (8). The conductivity sensor (10) is installed inside the detection container (8), and the temperature sensor (11) is installed inside the conductivity sensor (10). An auxiliary cleaning module is installed on the surface of the detection container (8). The system also includes an auxiliary cleaning module, which includes an ultrasonic transducer (12), a vibration detection chip (13), and an alarm (14). The ultrasonic transducer (12), the vibration detection chip (13), and the alarm (14) are installed on the surface of the detection container (8), and the vibration detection chip (13) is located between the ultrasonic transducer (12) and the alarm (14). The ultrasonic transducer (12), the vibration detection chip (13), and the alarm (14) are electrically connected.

2. The hemodialysis solution A quality monitoring system according to claim 1, characterized in that: The surface of the third pipe is equipped with a fifth solenoid valve V5. The surface of the first pipe is connected to a first solenoid valve V1, a second solenoid valve V2, and a third solenoid valve V3. The surface of the second pipe is equipped with a sixth solenoid valve V6. The surface of the branch pipe connected to the pure water storage unit is equipped with a seventh solenoid valve V7. The surface of the branch pipe connected to the conductivity detection unit is equipped with a ninth solenoid valve V9. The surface of the fifth pipe is equipped with a fourth solenoid valve V4. The surface of the sixth pipe is equipped with an initial solenoid valve V0. The surface of the seventh pipe is equipped with a tenth solenoid valve V10. The surface of the fourth pipe is equipped with an eighth solenoid valve V8, and the eighth solenoid valve V8 is located on the surface of the fourth pipe inside the density detection unit. The tail end of the fourth pipe is connected to a wastewater treatment interface (20). The initial solenoid valve V0, the first solenoid valve V1, the second solenoid valve V2, the third solenoid valve V3, the fourth solenoid valve V4, the fifth solenoid valve V5, the sixth solenoid valve V6, the seventh solenoid valve V7, the eighth solenoid valve V8, the ninth solenoid valve V9, and the tenth solenoid valve V10 constitute a solenoid valve unit.

3. The hemodialysis solution A quality monitoring system according to claim 2, characterized in that: The stepper motor unit includes a storage cylinder (1), a first infrared water level gauge (2), a stepper motor (3), and a suction pump (4). The first infrared water level gauge (2) is installed on the inner wall of the storage cylinder (1). The suction pump (4) is installed on the surface of the storage cylinder (1). The stepper motor (3) is installed on the surface of the suction pump (4). The input end of the suction pump (4) is connected to the tail end of the first pipe through a water pipe. The output end of the suction pump (4) is connected to the storage cylinder (1) through a water pipe.

4. The hemodialysis solution A quality monitoring system according to claim 3, characterized in that: The density detection unit includes a detection cylinder (5), a pressure sensor (6), and a second infrared water level gauge (7). The detection cylinder (5) is located below the storage cylinder (1). The second infrared water level gauge (7) is installed on the inner wall of the detection cylinder (5), and the pressure sensor (6) is installed on the bottom wall of the detection cylinder (5).

5. The hemodialysis solution A quality monitoring system according to claim 4, characterized in that: The pure water storage unit includes a cleaning water tank (15), which is located on one side of the detection cylinder (5).

6. The hemodialysis solution A quality monitoring system according to claim 5, characterized in that: The monitoring cabinet is equipped with an operation screen (16) and a cabinet door, and the operation screen (16) is located above the cabinet door. The operation screen (16) is electrically connected to a stepper motor (3), a pressure sensor (6), a conductivity sensor (10), and a temperature sensor (11). The back of the monitoring cabinet is provided with a heat dissipation window (17).

7. The hemodialysis solution A quality monitoring system according to claim 6, characterized in that: The purification unit includes an ultraviolet lamp and a photocatalytic mesh plate. The inner wall of the tail end of the seventh pipe is equipped with an ultraviolet lamp plate and a photocatalytic mesh plate, and the ultraviolet lamp is located on one side of the photocatalytic mesh plate.

8. The hemodialysis solution A quality monitoring system according to claim 7, characterized in that, The system operates as follows: S1. Before using this system in automatic mode to perform quality testing on concentrate A, open the initial solenoid valve V0, delay water injection for 15 seconds or inject water until the liquid level inside the test container (8) is W0, close the initial solenoid valve V0, stand still for 5 seconds, and the conductivity sensor (10) calculates and measures the liquid conductivity D1 (unit: mS / cm). Open the first solenoid valve V1, the second solenoid valve V2 and the third solenoid valve V3, and the stepper motor (3) runs forward at 60L / h to suck water until the liquid level inside the storage cylinder (1) is W1 or the stepper motor (3) runs forward at 60L / h to suck water until the liquid level inside the storage cylinder (1) is W1 or the liquid level inside the storage cylinder (1) is W1 or the liquid level inside the storage cylinder (1) is W0. (3) After the forward water intake reaches 15 seconds, the stepper motor stops. When the forward water intake is reached, the first solenoid valve V1, the second solenoid valve V2 and the third solenoid valve V3 are closed, and the third solenoid valve V3 and the sixth solenoid valve V6 are opened. The stepper motor (3) reverses to drain water at 60L / h. The water is drained until the liquid level inside the detection cylinder (5) is W2. When the reverse water drainage reaches 15 seconds, the stepper motor (3) stops. When the reverse water drainage is reached, the third solenoid valve V3 and the sixth solenoid valve V6 are closed. After 5 seconds of stillness, the pressure sensor (6) calculates the liquid weight G1 in g and converts it to liquid weight. The bulk density M1 = G1 / 250 units g / mL. The operation screen (16) displays the data of conductivity D1, weight G1, and density M1. Then, the eighth solenoid valve V8 opens and drains for 10 seconds. The first solenoid valve V1, the second solenoid valve V2, the third solenoid valve V3, the fifth solenoid valve V5, the sixth solenoid valve V6, the seventh solenoid valve V7, the eighth solenoid valve V8, and the ninth solenoid valve V9 open. The stepper motor (3) reverses and drains for 15 seconds. After the tenth solenoid valve V10 opens for 5 seconds, the initial solenoid valve V0, the first solenoid valve V1, the second solenoid valve V2, the third solenoid valve V9, and the fourth solenoid valve V9 open. Solenoid valves V3, V4, V5, V6, V7, V8, V9, and V10 are closed, thereby obtaining the conductivity and density data of concentrated solution A. While judging the quality of the solution to be tested, the combined control of the stepper motor unit, solenoid valve unit, density detection unit, and conductivity detection unit enables automatic detection of the solution to be tested, replacing manual quality control. According to the SOP requirements, the conductivity and density data of concentrated solution A are automatically recorded and saved. S2. When the relevant components in the automatic mode fail, manually take a quantitative amount of liquid into the detection cylinder (5) and the detection container (8), manually input the weight G2 (g) measured by the pressure sensor (6), manually input the liquid conductivity D2 (mS / cm) measured by the conductivity sensor (10), manually input the liquid volume A1 (mL), calculate the liquid density M2=G2 / A1 (g / mL) and display it on the surface of the operation screen (16) to realize backup quality monitoring. S3. Start the stepper motor (3) and open the fourth solenoid valve V4 to inject water. After injecting water for 15 seconds or until the water level inside the clean water tank (15) is W3, the fourth solenoid valve V4 closes to stop injecting water. The second solenoid valve V2, the third solenoid valve V3, and the fifth solenoid valve V5 open. The stepper motor (3) rotates forward at 60L / h to drive the suction pump (4) to run and suck water. After the water level inside the storage tank (1) reaches the W1 position, extend the suction time by 5 seconds or stop the stepper motor (3) from rotating forward to suck water for 35 seconds. Then, the fifth solenoid valve V5 closes, the first solenoid valve V1 opens, and the stepper motor (3) rotates in reverse at 60L / h to drain water. After 20 seconds, the ninth solenoid valve V9 opens. When the stepper motor (3) stops running, after 10 seconds, the second solenoid valve V2 closes, and the fifth solenoid valve V5, the sixth solenoid valve V6, the seventh solenoid valve V7 and the tenth solenoid valve V10 open. The stepper motor (3) drains water in reverse at 60L / h for 15 seconds and then stops running. After 10 seconds, the eighth solenoid valve V8 opens, and after 10 seconds, the second solenoid valve V2 opens. After 5 seconds, the first solenoid valve V1, the second solenoid valve V2 and the third solenoid valve V3 close, and the fifth solenoid valve V5, the sixth solenoid valve V6, the seventh solenoid valve V7, the eighth solenoid valve V8, the ninth solenoid valve V9 and the tenth solenoid valve V10 close, thus achieving automatic cleaning after a single measurement to ensure the accuracy of the next test result. S4. During the soaking disinfection process, the first solenoid valve V1, the second solenoid valve V2, and the third solenoid valve V3 are opened. The stepper motor (3) rotates forward at 60L / h to draw liquid. After the liquid level inside the storage cylinder (1) reaches W1, or after the stepper motor (3) has been drawing water for 35 seconds, the stepper motor (3) stops rotating forward to draw water and remains still for 10 seconds. Then, the second solenoid valve V2 is closed, and the sixth solenoid valve V6 is opened. The stepper motor (3) rotates in reverse at 60L / h to drain water, so that the liquid level inside the detection cylinder (5) reaches the W2 position, or after the stepper motor (3) has been draining water for 20 seconds, the stepper motor (3) stops rotating in reverse to drain water. Then, the first solenoid valve V1 is opened, and the second solenoid valve V2 is closed, and the sixth solenoid valve V6 is opened. The stepper motor (3) rotates in reverse at 60L / h to drain water, so that the liquid level inside the detection cylinder (5) reaches the W2 position, or after the stepper motor (3) has been draining water for 20 seconds, the stepper motor (3) stops rotating in reverse to drain water. When the sixth solenoid valve V6 and the first solenoid valve V1 are closed, the second solenoid valve V2 and the fifth solenoid valve V5 are opened, the stepper motor (3) starts to reverse and drain water, stops running after 15 seconds, stops for 10 seconds, the first solenoid valve V1, the third solenoid valve V3, the sixth solenoid valve V6, the seventh solenoid valve V7, the eighth solenoid valve V8, the ninth solenoid valve V9 and the tenth solenoid valve V10 are opened, and after 5 seconds, the first solenoid valve V1, the second solenoid valve V2 and the third solenoid valve V3 are closed, and the fifth solenoid valve V5, the sixth solenoid valve V6, the seventh solenoid valve V7, the eighth solenoid valve V8, the ninth solenoid valve V9 and the tenth solenoid valve V10 are closed. S5. In order to reduce the crystallization phenomenon of conductivity sensor (10) during use and thus ensure the detection accuracy of conductivity sensor (10), ultrasonic transducer (12) is used to provide ultrasonic cleaning treatment on the surface of conductivity sensor (10) inside detection container (8). When ultrasonic transducer (12) malfunctions and starts, vibration detection chip (13) fails to detect the corresponding vibration frequency of liquid inside detection container (8). At this time, alarm (14) alarms to remind the operator that ultrasonic transducer (12) has malfunctioned and needs to be replaced and repaired in time.

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