CN116808336A

CN116808336A - Centralized dialysate supply equipment control system and working method thereof

Info

Publication number: CN116808336A
Application number: CN202310928183.2A
Authority: CN
Inventors: 马强; 王爱民
Original assignee: Hunan Fanjing Medical Technology Co ltd
Current assignee: Hunan Fanjing Medical Technology Co ltd
Priority date: 2023-07-26
Filing date: 2023-07-26
Publication date: 2023-09-29

Abstract

The application discloses a control system for equipment for intensively supplying dialysate and a working method thereof. The control system comprises a water inlet balancer, a mixer, a heater, a powder storage bin, a liquid supply balancer, an electromagnetic valve V1, a pump P2, a pump P3, a pump P4, a circulating valve MV1, a circulating valve MV2, a circulating valve MV3, a circulating valve MV4, a PLC controller and a touch display screen; a powder pushing motor M1 and a stirring motor M2 are arranged in the powder storage bin; liquid level sensors are arranged in the water inlet balancer, the mixer and the liquid supply balancer; a temperature sensor is arranged in the water inlet balancer; an electrical conductivity sensor is arranged in the mixer. The application can thoroughly get rid of the trouble of manually counting the powder feeding quantity, and improves the safety and accuracy of liquid preparation; meanwhile, a liquid preparation mode which is used immediately after preparation can be realized, volatilization of bicarbonate ions can be inhibited, and the purity of the dialysate can be improved.

Description

Centralized dialysate supply equipment control system and working method thereof

Technical Field

The application relates to the technical field of dialysate equipment, in particular to a centralized supply dialysate equipment control system and a working method thereof.

Background

At present, hemodialysis uses dialysate and treats various acute and chronic renal failure diseases through a hemodialysis machine, wherein concentrated liquid supply is used as a novel dialysate preparation and supply mode, has a large market share in China, and the concentrated liquid supply equipment can rapidly prepare qualified dialysate, so that the normal operation of a hemodialysis center is greatly influenced. The centralized liquid supply system is a system for simultaneously conveying concentrated liquid and dialyzate for dialysis to a plurality of hemodialysis machines through a central infusion pipeline, and has the advantages of saving manpower, reducing cost, improving space utilization rate, improving dialysis treatment efficiency and the like.

The control principle of the domestic traditional centralized liquid supply equipment is relatively simple and is mainly divided into 3 parts, wherein the first step is to stir and prepare liquid (stirring blade or circulating pump mode); the second part is a liquid storage, and the prepared dialysis concentrated solution is transferred from the stirrer to a liquid storage barrel for standby through a water pump; and finally, supplying liquid, namely conveying the liquid which is ready for use in the liquid storage barrel through a water pump or supplying the liquid to a dialysis machine port of a ward in a self-pressure conveying mode.

The inventor realizes that with the development of domestic medical technology, the liquid preparation system is also developed from the most original manual liquid preparation to automatic liquid preparation and then to the later liquid preparation of a weighing system, but the above methods all need to manually count the number of dialysis powder bags (commonly known as a number of bags) to confirm the amount of dialysis powder put in.

Disclosure of Invention

Based on the above technical problems, a control system for centralized supply of dialysate equipment and a working method thereof are provided, so as to solve the technical problem that the existing centralized supply equipment needs to manually count the number of dialysis powder bags.

In order to achieve the above object, the present application provides the following technical solutions:

in a first aspect, a control system for centralized supply of dialysate equipment includes centralized supply of dialysate equipment, where the centralized supply of dialysate equipment includes a water inlet balancer, a first water inlet end of the water inlet balancer is connected with a water outlet end of a reverse osmosis water supply system through a first pipeline, and an electromagnetic valve V1 is disposed on the first pipeline; the water outlet end of the water inlet balancer is connected with the first input end of the mixer through a second pipeline, and the second pipeline is provided with a pump P2 and a circulating valve MV1; the second pipeline is connected with one end of the third pipeline, and the connection point is positioned between the pump P2 and the circulating valve MV1; the other end of the third pipeline is connected with the second water inlet end of the water inlet balancer, and a heater is arranged on the third pipeline; the second input end of the mixer is connected with the powder outlet end of the powder storage bin, and the powder storage bin is internally provided with a powder pushing motor M1 and a stirring motor M2; the output end of the mixer is connected with the input end of the liquid supply balancer through a fourth pipeline, and the fourth pipeline is provided with a pump P3 and a circulating valve MV3; the fourth pipeline is connected with one end of the fifth pipeline, and the connection point is positioned between the pump P3 and the circulating valve MV3; the other end of the fifth pipeline is connected with a third input end of the mixer, and a circulating valve MV2 is arranged on the fifth pipeline; the output end of the liquid supply balancer is connected with an external pipeline through a sixth pipeline, and a pump P4 and a circulating valve MV4 are arranged on the sixth pipeline;

A liquid level sensor F1 and a liquid level sensor F2 are sequentially arranged in the mixer from low to high; a liquid level sensor F3, a liquid level sensor F4 and a liquid level sensor F5 are sequentially arranged in the liquid supply balancer from low to high; a liquid level sensor F6 and a liquid level sensor F7 are sequentially arranged in the water inlet balancer from low to high; a temperature sensor is arranged in the water inlet balancer; an electrical conductivity sensor is arranged in the mixer;

the multi-path data input end of the PLC is respectively and electrically connected with the data output ends of the liquid level sensor F1, the liquid level sensor F2, the liquid level sensor F3, the liquid level sensor F4, the liquid level sensor F5, the liquid level sensor F6, the liquid level sensor F7, the temperature sensor and the conductivity sensor; the multipath control signal output end of the PLC is respectively and electrically connected with the control signal input ends of the powder pushing motor M1, the stirring motor M2, the electromagnetic valve V1, the circulating valve MV2, the circulating valve MV3, the circulating valve MV4, the pump P2, the pump P3 and the pump P4; and the PLC is in bidirectional communication connection with the heater and the touch display screen.

Optionally, the first pipeline is connected with one end of the seventh pipeline, and the connection point is located between the first water inlet end of the water inlet balancer and the electromagnetic valve V1; the other end of the seventh pipeline extends below the liquid level of the disinfectant in the disinfectant container, and the seventh pipeline is provided with an electromagnetic valve V2 and a pump P1; and two paths of control signal output ends of the PLC are respectively and electrically connected with the control signal input ends of the electromagnetic valve V2 and the pump P1.

Optionally, the fourth pipeline is connected with one end of the eighth pipeline, and the connection point is located between the pump P3 and the circulation valve MV 3; the other end of the eighth pipeline extends into the discharge container, and a circulating valve MV5 is arranged on the eighth pipeline; one path of control signal output end of the PLC is electrically connected with the control signal input end of the circulating valve MV 5.

Further alternatively, the sixth pipe is connected to one end of the ninth pipe, and the connection point is located between the pump P4 and the circulation valve MV 4; the other end of the ninth pipeline is connected with the eighth pipeline, and a circulating valve MV6 is arranged on the ninth pipeline; one path of control signal output end of the PLC is electrically connected with the control signal input end of the circulating valve MV 6.

In a second aspect, a method for operating a centralized-supply dialysate equipment control system, applied to the centralized-supply dialysate equipment control system of the first aspect, includes:

s1, a PLC controller receives an operation mode selected by a user on a touch display screen;

s2, when the operation mode is a water inlet and heating mode, the PLC receives data fed back by the liquid level sensor F6, the liquid level sensor F7 and the temperature sensor in real time, and executes steps S3-S4;

S3, the PLC judges the liquid level in the current water inlet balancer according to the data fed back by the liquid level sensor F6 and the liquid level sensor F7; if the liquid level in the current water inlet balancer is lower than the setting position of the liquid level sensor F6, the PLC controller sends an opening control signal to the electromagnetic valve V1; if the liquid level in the current water inlet balancer is higher than the setting position of the liquid level sensor F7, the PLC controller sends a closing control signal to the electromagnetic valve V1;

s4, the PLC judges whether the water temperature in the current water inlet balancer is lower than a preset first temperature threshold according to the data fed back by the temperature sensor; if the water temperature in the current water inlet balancer is lower than a preset first temperature threshold value, the PLC controller sends opening control signals to the pump P2 and the heater; if the water temperature in the current water inlet balancer is higher than or equal to a preset first temperature threshold value, the PLC controller sends a closing control signal to the pump P2 and the heater;

s5, when the operation mode is a liquid preparation mode, the PLC receives data fed back by the liquid level sensor F1, the liquid level sensor F2, the liquid level sensor F3, the liquid level sensor F4, the liquid level sensor F5 and the conductivity sensor in real time, and executes the steps S6-S8;

s6, the PLC controller sends opening control signals to the pump P2 and the circulating valve MV1, and judges the liquid level in the current mixer according to the liquid level sensor F1 and the data fed back by the liquid level sensor F2; if the liquid level in the current mixer reaches the setting position of the liquid level sensor F1, the PLC controller sends opening control signals to the pump P3 and the circulating valve MV2 and sends starting control signals to the powder pushing motor M1 and the stirring motor M2; if the liquid level in the current mixer reaches the setting position of the liquid level sensor F2, the PLC controller sends closing control signals to the pump P2 and the circulating valve MV 1;

S7, the PLC judges whether the conductivity of the liquid in the current mixer reaches a preset conductivity threshold according to the data fed back by the conductivity sensor; if the conductivity of the liquid in the current mixer reaches a preset conductivity threshold, the PLC controller sends stop control signals to the powder pushing motor M1 and the stirring motor M2, and after a preset first time length, sends a closing control signal to the circulating valve MV2 and sends an opening control signal to the circulating valve MV 3;

s8, the PLC judges the liquid level in the current liquid supply balancer according to the data fed back by the liquid level sensor F3, the liquid level sensor F4 and the liquid level sensor F5; if the liquid level in the current liquid supply balancer reaches the setting position of the liquid level sensor F5, the PLC controller sends closing control signals to the pump P2, the pump P3, the circulating valve MV1 and the circulating valve MV 3;

s9, when the operation mode is a liquid supply mode, receiving data fed back by the liquid level sensor F3, the liquid level sensor F4 and the liquid level sensor F5 in real time, and executing a step S10;

s10, the PLC judges the liquid level in the current liquid supply balancer according to the data fed back by the liquid level sensor F3, the liquid level sensor F4 and the liquid level sensor F5; if the current liquid level in the liquid supply balancer is higher than the set position of the liquid level sensor F4 and is maintained for a preset second time length, the PLC controller sends opening control signals to the pump P4 and the circulating valve MV 4.

Optionally, the method further comprises:

if the electromagnetic valve V1 is opened for a preset third time length, the liquid level in the current water inlet balancer is still lower than the setting position of the liquid level sensor F6, and the PLC sends a water supply shortage alarm prompt to the touch display screen; if the water temperature in the current water inlet balancer is still lower than the preset first temperature threshold after the pump P2 and the heater are turned on for a preset fourth time length, the PLC controller sends a water temperature heating deficiency alarm prompt to the touch display screen;

the PLC controller acquires the temperature of the heater in real time; when the temperature of the heater is higher than a preset second temperature threshold, the PLC controller sends an alarm prompt for overhigh temperature of the heater to the touch display screen.

Further optionally, the method further comprises:

if the electric conductivity of the liquid in the current mixer still does not reach the preset electric conductivity threshold after the powder pushing motor M1 is started for a preset fifth time length, the PLC controller sends a powder shortage alarm prompt to the touch display screen; if the electric conductivity of the liquid in the current mixer still does not reach the preset electric conductivity threshold after the powder pushing motor M1 is started for a preset sixth time length, the PLC controller sends an excessive powder injection alarm prompt to the touch display screen.

Further alternatively, the preset first time length, the preset second time length, and the preset third time length are all 60 seconds, the preset fourth time length is 180 seconds, the preset fifth time length is 12 seconds, and the preset sixth time length is 250 seconds.

Optionally, the method further comprises:

s11, when the operation mode is a host disinfection mode, the PLC receives data fed back by the liquid level sensor F6, the liquid level sensor F7 and the temperature sensor in real time, and executes steps S12-S14;

s12, the PLC controller sends an opening control signal to the electromagnetic valve V1, and judges the liquid level in the current water inlet balancer according to data fed back by the liquid level sensor F6 and the liquid level sensor F7; if the liquid level in the current water inlet balancer reaches the setting position of the liquid level sensor F7, the PLC controller sends a closing control signal to the electromagnetic valve V1 and sends opening control signals to the pump P1 and the electromagnetic valve V2;

s13, when the disinfectant suction amount reaches a preset disinfectant suction amount threshold, the PLC controller sends an opening control signal to the electromagnetic valve V1 and sends a closing control signal to the pump P1; when the liquid in the front water inlet balancer fills the whole water inlet balancer, the PLC controller sends opening control signals to the pump P2, the pump P3, the circulating valve MV1 and the circulating valve MV3 and sends closing control signals to the electromagnetic valve V1;

And S14, if the liquid level in the current water inlet balancer is lower than the setting position of the liquid level sensor F6, the PLC controller sends closing control signals to the pump P2, the pump P3, the circulating valve MV1 and the circulating valve MV3, and the steps S12-S13 are repeatedly executed until the disinfectant is filled in the whole centralized supply dialysate equipment.

Optionally, the method further comprises:

s15, when the operation mode is a full system disinfection mode, the PLC receives data fed back by the liquid level sensor F3, the liquid level sensor F4, the liquid level sensor F5, the liquid level sensor F6 and the liquid level sensor F7 in real time, and executes steps S16-S18;

s16, the PLC controller sends an opening control signal to the electromagnetic valve V1, and judges the liquid level in the current water inlet balancer according to data fed back by the liquid level sensor F6 and the liquid level sensor F7; if the liquid level in the current water inlet balancer reaches the setting position of the liquid level sensor F7, the PLC controller sends a closing control signal to the electromagnetic valve V1 and sends opening control signals to the pump P1 and the electromagnetic valve V2;

s17, when the disinfectant suction amount reaches a preset disinfectant suction amount threshold, the PLC controller sends an opening control signal to the electromagnetic valve V1 and sends a closing control signal to the pump P1; when the liquid in the front water inlet balancer fills the whole water inlet balancer, the PLC controller sends opening control signals to the pump P2, the pump P3, the circulating valve MV1 and the circulating valve MV3 and sends closing control signals to the electromagnetic valve V1;

And S18, the PLC judges the liquid level in the current liquid supply balancer according to the data fed back by the liquid level sensor F3, the liquid level sensor F4 and the liquid level sensor F5, and if the liquid level in the current liquid supply balancer reaches the setting position of the liquid level sensor F5, the PLC sends opening control signals to the pump P4 and the circulating valve MV 4.

The invention has at least the following beneficial effects:

the embodiment of the invention provides a new hardware architecture and a corresponding working method of a centralized dialysate supply equipment control system, which can finish the whole heating, liquid preparation and liquid supply processes by a sensor negative feedback (PID) control technology without metering the quantity of dialysate powder; the centralized supply dialysate equipment control system provided by the embodiment of the invention can thoroughly get rid of the trouble of manually counting the powder feeding quantity, and improves the safety and accuracy of liquid preparation; meanwhile, a liquid preparation mode which is used immediately after preparation can be realized, volatilization of bicarbonate ions can be inhibited, and the purity of the dialysate can be improved.

Drawings

Fig. 1 is a schematic structural diagram of a control system for a centralized dialysate supplying device according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a circuit connection relationship of a control system of a centralized dialysate supplying device according to an embodiment of the present invention;

FIG. 3 is a schematic diagram showing a complete circuit connection relationship of a centralized-supply dialysate equipment control system according to an embodiment of the present application;

FIG. 4 is a schematic diagram showing another circuit connection relationship of a centralized-supply dialysate equipment control system according to an embodiment of the present application;

fig. 5 is a schematic flow chart of a working method of a centralized dialysate supply control system according to an embodiment of the present application;

FIG. 6 is a schematic diagram of the overall flow path of a dispensing process in accordance with one embodiment of the present application.

Reference numerals illustrate:

1. a water inlet balancer; 2. a first pipe; 3. a second pipe; 4. a mixer; 5. a third conduit; 6. a heater; 7. a powder storage bin; 8. a fourth conduit; 9. a liquid supply balancer; 10. a fifth pipe; 11. a sixth conduit; 12. a temperature sensor; 13. an electrical conductivity sensor; 14. a PLC controller; 15. touching the display screen; 17. a disinfectant container; 18. an eighth conduit; 19. a discharge container; 20. and a ninth pipeline.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

In one embodiment, there is provided a centralized-supply dialysate equipment control system, which includes a centralized-supply dialysate equipment, as shown in fig. 1, where the centralized-supply dialysate equipment includes a water intake balancer 1, a first water intake end of the water intake balancer 1 is connected to a water outlet end of an anti-water seepage water supply system through a first pipe 2, and a solenoid valve V1 is disposed on the first pipe 2; the water outlet end of the water inlet balancer 1 is connected with the first input end of the mixer 4 through a second pipeline 3, and the second pipeline 3 is provided with a pump P2 and a circulating valve MV1; the second pipeline 3 is connected with one end of the third pipeline 5, and the connection point is positioned between the pump P2 and the circulating valve MV1; the other end of the third pipeline 5 is connected with the second water inlet end of the water inlet balancer 1, and the heater 6 is arranged on the third pipeline 5; the second input end of the mixer 4 is connected with the powder outlet end of the powder storage bin 7, and the powder storage bin 7 is internally provided with a powder pushing motor M1 and a stirring motor M2; the output end of the mixer 4 is connected with the input end of a liquid supply balancer 9 through a fourth pipeline 8, and the fourth pipeline 8 is provided with a pump P3 and a circulating valve MV3; the fourth pipeline 8 is connected with one end of the fifth pipeline 10, and the connection point is positioned between the pump P3 and the circulating valve MV3; the other end of the fifth pipeline 10 is connected with a third input end of the mixer 4, and a circulating valve MV2 is arranged on the fifth pipeline 10; the output end of the liquid supply balancer 9 is connected with an external pipeline through a sixth pipeline 11, and the sixth pipeline 11 is provided with a pump P4 and a circulating valve MV4;

A liquid level sensor F1 and a liquid level sensor F2 are sequentially arranged in the mixer 4 from low to high; a liquid level sensor F3, a liquid level sensor F4 and a liquid level sensor F5 are sequentially arranged in the liquid supply balancer 9 from low to high; a liquid level sensor F6 and a liquid level sensor F7 are sequentially arranged in the water inlet balancer 1 from low to high; a temperature sensor 12 is also arranged in the water inlet balancer 1 and is used for collecting the temperature of the liquid in the water inlet balancer 1; an electrical conductivity sensor 13 is arranged in the mixer 4 and is used for collecting the electrical conductivity of the liquid in the mixer 4;

as shown in fig. 2, the multi-path data input ends of the PLC controller 14 are electrically connected with the data output ends of the liquid level sensor F1, the liquid level sensor F2, the liquid level sensor F3, the liquid level sensor F4, the liquid level sensor F5, the liquid level sensor F6, the liquid level sensor F7, the temperature sensor 12 and the conductivity sensor 13, respectively; the multipath control signal output ends of the PLC 14 are respectively and electrically connected with the control signal input ends of the powder pushing motor M1, the stirring motor M2, the electromagnetic valve V1, the circulating valve MV2, the circulating valve MV3, the circulating valve MV4, the pump P2, the pump P3 and the pump P4; the PLC 14 is in two-way communication connection with the heater 6 and the touch display screen 15.

Further, the first pipe 2 is connected with one end of the seventh pipe 16, and the connection point is positioned between the first water inlet end of the water inlet balancer 1 and the electromagnetic valve V1; the other end of the seventh pipeline 16 extends below the liquid level of the disinfectant in the disinfectant container 17, and the seventh pipeline 16 is provided with an electromagnetic valve V2 and a pump P1; as shown in fig. 3, two control signal output ends of the PLC controller 14 are electrically connected to control signal input ends of the solenoid valve V2 and the pump P1, respectively.

Further, the fourth pipe 8 is connected to one end of the eighth pipe 18, and the connection point is located between the pump P3 and the circulation valve MV 3; the other end of the eighth pipeline 18 extends into the discharge container 19, and a circulating valve MV5 is arranged on the eighth pipeline 18; as shown in fig. 3, one control signal output end of the PLC controller 14 is electrically connected to a control signal input end of the circulation valve MV 5.

Further, the sixth pipe 11 is connected to one end of the ninth pipe 20, and the connection point is located between the pump P4 and the circulation valve MV 4; the other end of the ninth pipeline 20 is connected with the eighth pipeline 18, and the connection point is positioned between the circulating valve MV5 and the output end of the eighth pipeline 18; the ninth pipeline 20 is provided with a circulating valve MV6; as shown in fig. 3, one control signal output end of the PLC controller 14 is electrically connected to a control signal input end of the circulation valve MV 6.

The schematic diagram of the circuit connection of the centralized-supply dialysate apparatus control system can also be seen in fig. 4.

The traditional domestic equipment control technology has the defects that the quantity of the dialysis powder is always required to be manually confirmed, the technical bottleneck cannot be bypassed, no matter the control modes of automatic liquid preparation, weighing liquid preparation and the like which are developed later, the quantity of the dialysis powder is finally required to be manually confirmed, and the step seems to be incapable of being passed.

The embodiment of the invention provides a new hardware architecture for a centralized supply dialysis liquid equipment control system, which provides hardware support for PID conductivity control powder pushing and liquid preparation, so that the technical bottleneck of the quantity of dialysis powder which must be metered into can be broken through; by utilizing the control system provided by the embodiment of the invention, the whole heating, liquid preparation and liquid supply processes can be completed by a sensor negative feedback (PID) control technology without metering the quantity of dialysis powder.

The centralized supply dialysate equipment control system provided by the embodiment of the invention can thoroughly get rid of the trouble of manually counting the powder feeding quantity, and improves the safety and accuracy of liquid preparation; meanwhile, the occupied space of the equipment can be reduced to a great extent; meanwhile, the equipment matched with the control system also adopts a liquid preparation mode of instant preparation, so that volatilization of bicarbonate ions can be inhibited, and the purity of the dialysate can be improved; concentrate is directly supplied to the dialysis machine in the ward of the negative area and the positive area, unidirectional branch liquid supply is realized, and hospital infection risk is avoided.

In one embodiment, as shown in fig. 5, there is provided an operating method of the centralized-supply dialysate apparatus control system, which is applied to the centralized-supply dialysate apparatus control system provided in the above embodiment, the method including the steps of:

s4, the PLC judges whether the water temperature in the current water inlet balancer is lower than a preset first temperature threshold according to the data fed back by the temperature sensor; if the water temperature in the current water inlet balancer is lower than a preset first temperature threshold value, the PLC controller sends opening control signals to the pump P2 and the heater; if the current water temperature in the water inlet balancer is higher than or equal to a preset first temperature threshold, the PLC controller sends a closing control signal to the pump P2 and the heater.

Further, the method further comprises:

The third time length is preset to be 60 seconds, the fourth time length is preset to be 180 seconds, and the second temperature threshold is preset to be 55 degrees.

In other words, the control flow first step of water feeding and heating:

2 water inlet balancers (high-low liquid level sensors) are arranged, when the liquid level in the water inlet balancers is lower than the F6 low liquid level, a control program opens the water inlet electromagnetic valve V1 to supplement water; when the liquid level in the balancer is higher than the F7 high liquid level, the control program closes the V1 electromagnetic valve, and water supplementing is stopped; meanwhile, when the temperature sensor detects the water inlet temperature, if the water inlet temperature is lower than the set temperature, the control program turns on the heater, the P2 pump works along with the heater, and the water temperature in the balancer is heated to the set temperature for standby, so that the whole water inlet heating control process is realized.

Alarming and deviation correcting program: in the whole water inlet and heating process, 3 alarm points are arranged, firstly, when a water inlet valve V1 is opened for 60 seconds, a low liquid level F6 of a water inlet balancer still has no signal (the water level does not reach the low liquid level), and then, the water supply shortage alarm is triggered; secondly, in the running process, when the water temperature in the water inlet balancer is lower than the set temperature and the water temperature still cannot reach the set value after the heater continues for 180 seconds, triggering the water temperature heating shortage alarm; third, in the operation process, when the temperature of the heater is higher than 55 ℃, the heater is triggered to alarm when the temperature is too high.

s8, the PLC judges the liquid level in the current liquid supply balancer according to the data fed back by the liquid level sensor F3, the liquid level sensor F4 and the liquid level sensor F5; if the current liquid level in the liquid supply balancer reaches the setting position of the liquid level sensor F5, the PLC controller sends closing control signals to the pump P2, the pump P3, the circulating valve MV1 and the circulating valve MV 3.

Further, the method further comprises:

The preset first time length is 60 seconds, the preset fifth time length is 12 seconds, and the preset sixth time length is 250 seconds.

In other words, in the second step of the control flow, liquid preparation:

after the liquid preparation program is started, the valve MV1 of the P2 pump is opened to start water injection in the mixer, and when the water level of the mixer reaches the F1 low liquid level, the P3 pump and the valve MV2 circulation valve start to operate, and simultaneously, the stirring motor M2 and the powder pushing motor M1 of the powder pushing device start to operate. The dialysis powder in the powder bin is evenly conveyed into the mixer, mixed with reverse osmosis water for circulation stirring, water injection is stopped after the high liquid level F2 of the mixer is reached, water is not fed into the mixer any more, but the powder pushing process continues to run until the conductivity of liquid in the mixer reaches a set value, the powder pushing device is stopped, and at the moment, the P3 pump and the MV2 circulating valve continue to run for about 1 minute. After the conductivity measurement value is completely stabilized, the MV3 valve is opened, the MV2 circulating valve is closed, the prepared concentrated solution is conveyed into the liquid supply balancer, the whole process can be regarded as a batch of the prepared solution, the liquid preparation program is suspended until the concentrated solution reaches the F5 high liquid level in the liquid supply balancer, the liquid preparation program is restarted until the liquid level in the liquid supply balancer is lower than the F4 medium liquid level, and the liquid preparation program is suspended again until the concentrated solution reaches the F5 high liquid level in the liquid supply balancer. The whole operation process is repeated until the treatment is finished all the day, and after the equipment has the operator to stop, the whole liquid preparation program is stopped.

Alarming and deviation correcting program: in the whole liquid preparation process, 4 alarm and correction processes are arranged, firstly, when the powder pushing motor M1 runs for 12 seconds continuously but the liquid conductivity change is smaller than a default value, the powder shortage alarm is triggered; secondly, triggering excessive powder injection alarm when the powder pushing motor M1 runs for 250 seconds continuously and the change of the liquid conductivity monitoring value is smaller than a default value; thirdly, in the batch dissolution process, when the conductivity monitoring value exceeds the allowable limit value of the upper limit range and the lower limit range of the set value, the equipment automatically starts a correction program, and the prepared liquid is re-dissolved after being discharged, if the conductivity monitoring value still exceeds the allowable limit value of the upper limit range and the lower limit range of the set value after 3 times of re-preparation, the dissolution abnormality alarm is triggered; fourth, in the batch dissolution process, when the conductivity monitoring value exceeds the allowable limit value of the upper and lower limit ranges of the set value in the process of transferring the concentrated solution to the liquid supply balancer, the concentration abnormality alarm is triggered.

Wherein the preset second time length is 60 seconds.

In other words, the third step of the control flow is to supply liquid:

1. liquid supply start (liquid replacement: concentrate replacement reverse osmosis water):

after the liquid supply program is started, after the liquid level in the liquid supply balancer F4 is continuously kept for more than 60 seconds, a P4 pump MV4 valve is opened, the equipment starts to supply liquid to an external pipeline, the liquid replacement program is started at the same time when the first liquid supply per day, namely, the end electromagnetic valves (V21-V24) are opened in a circulating mode, the reverse osmosis water in each branch pipeline is gradually emptied in a circulating mode according to the set time until the set time is completed, all pipelines are filled with concentrated dialysate, liquid replacement is completed, at the moment, the equipment is started to supply liquid standby in a real sense, and the end electromagnetic valves are not opened any more.

2. Stop of liquid supply (liquid replacement: reverse osmosis water replacement concentrate):

when the liquid supply is stopped, the whole liquid preparation system firstly empties all the existing concentrated liquid (a water supply balancer, a mixer, the liquid supply balancer and all pipeline valves in the equipment), then fills the whole system with reverse osmosis water, finally, after the reverse osmosis water reaches the high liquid level of the liquid supply balancer F5, the valve of the P4 pump MV4 is opened, meanwhile, a liquid replacement program is started, namely, the end electromagnetic valve (V21-V24) is circularly opened, the concentrated liquid in each branch pipeline is sequentially opened according to the set time, the concentrated liquid in each branch pipeline is gradually emptied in a circulating way until the set liquid replacement time is completely finished, and the equipment enters a standby state.

Further, the method further comprises:

In other words, the control flow fourth step, disinfection:

1. main unit sterilization (without external liquid supply pipeline)

After the disinfection program is determined to be started, the control program opens the water inlet electromagnetic valve V1 to supplement water, and when the liquid level in the water supply balancer reaches the F7 high liquid level, the control program closes the V1 electromagnetic valve to stop supplementing water; simultaneously, the disinfectant pump P1 and the disinfectant valve V2 are opened, the disinfectant is sucked into the RO horizontal balancer until the disinfectant suction amount set in the program is reached, and then the control program continues to open the water inlet electromagnetic valve V1 to supplement water until the whole balancer is full. At this time MV1 is opened, P2 pump is opened, the prepared disinfectant is transferred to mixer, then the mixer is transferred to the liquid supply balancer, when the disinfectant prepared in RO horizontal balancer is lower than F6 low liquid level, the disinfectant is fed into first step of disinfectant preparation procedure, and the disinfectant is fully filled in the whole system, and each container is soaked in disinfectant for more than 30 min, and after the whole process is completed, the disinfectant is emptied, and the disinfectant is emptied just as the water inlet process, and the disinfectant is not sucked again until all the disinfectant is washed completely, and the equipment is stopped.

2. Whole system disinfection (with external liquid supply pipeline)

When the disinfection program is determined to be started, the disinfection solution preparation process is completely the same as that of a host machine, and the difference is that when the disinfection solution in the solution supply balancer reaches the high F5 liquid level, the control program starts the solution replacement program, the valve MV4 of the P4 pump is opened, the equipment starts to convey the disinfection solution to an external pipeline, namely, the end electromagnetic valve (V21-V24) is opened circularly and sequentially according to the set time, the disinfection solution is conveyed into each branch pipeline, and reverse osmosis water is gradually drained until the set disinfection time is reached (the retention time of the disinfection solution in the pipeline is more than 30 min). At this time, all the pipelines are filled with disinfectant, after the whole disinfection program is finished, the control program starts the liquid replacement (namely water flushing) program again, the water inlet process is the same, when reverse osmosis water reaches the high liquid level of the liquid supply balancer F5, the P4 pump MV4 valve is opened, the program circulates and opens the end electromagnetic valve (V21-V24), the program is sequentially opened according to the set time, the disinfectant in each branch pipeline is gradually emptied in sequence until the set emptying time is all finished, and the equipment enters a standby state.

In addition, in the fifth step of the control flow, the time controller:

the centralized dialysate supply equipment control system is added with an auxiliary time controller in addition to the main process flow control mode. The time controller is mainly used for controlling the related time period of automatic operation, because in normal cases, after the treatment of each day is finished, medical care or operators are required to confirm that the disinfection function of the equipment is started, but the liquid replacement program in the morning of each day is required to be completed within one hour before the medical care personnel go to work, so that the equipment is ensured to reach the state of liquid delivery standby after the medical care personnel go to work. So the control system is internally provided with 10 groups of automatic operation programs, such as water washing liquid supply, main machine disinfection liquid supply, disinfection liquid soaking liquid supply, main pipe disinfection liquid supply, active water disinfection liquid supply and the like, for a total of 10 groups of automatic operation modes. The operation time of the disinfection subprogram of each group is different, but the time controller can ensure that the liquid supply time of each day is the same, for example, medical staff can work 8 hours a day in the morning, and the automatic time control program can supply the configured dialysis concentrated solution to each machine position of a ward at the 7 th 50 th.

In the working method of the centralized dialysate supply equipment control system provided by the embodiment of the invention, the core point is that PID conductivity control powder pushing and liquid preparation can break through the technical bottleneck that the quantity of dialysate powder must be metered. The working method is to complete the whole heating, liquid preparation and liquid supply processes through a sensor negative feedback (PID) control technology without metering the quantity of dialysis powder by learning the control principle theory of inlet equipment, and the liquid preparation flow is shown in figure 6.

It should be understood that, although the steps in the flowchart of fig. 5 are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least a portion of the steps in fig. 5 may include a plurality of steps or stages that are not necessarily performed at the same time, but may be performed at different times, and the order of execution of the steps or stages is not necessarily sequential, but may be performed in rotation or alternatively with at least a portion of the steps or stages in other steps or other steps.

In one embodiment, a computer device is provided, including a memory and a PLC controller, the memory having a computer program stored therein, involving all or part of the flow of the method of the above embodiments.

In one embodiment, a computer readable storage medium having a computer program stored thereon is provided, involving all or part of the flow of the methods of the embodiments described above.

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile memory may include Read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, or the like. Volatile memory can include Random access memory (Random AccessMemory, RAM) or external cache memory. By way of illustration, and not limitation, RAM can take many forms, such as static random access memory (StaticRandomAccessMemory, SRAM) or dynamic random access memory (DynamicRandomAccessMemory, DRAM), among others.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. The centralized supply dialysate equipment control system is characterized by comprising centralized supply dialysate equipment, wherein the centralized supply dialysate equipment comprises a water inlet balancer, a first water inlet end of the water inlet balancer is connected with a water outlet end of a reverse osmosis water supply system through a first pipeline, and a solenoid valve V1 is arranged on the first pipeline; the water outlet end of the water inlet balancer is connected with the first input end of the mixer through a second pipeline, and the second pipeline is provided with a pump P2 and a circulating valve MV1; the second pipeline is connected with one end of the third pipeline, and the connection point is positioned between the pump P2 and the circulating valve MV1; the other end of the third pipeline is connected with the second water inlet end of the water inlet balancer, and a heater is arranged on the third pipeline; the second input end of the mixer is connected with the powder outlet end of the powder storage bin, and the powder storage bin is internally provided with a powder pushing motor M1 and a stirring motor M2; the output end of the mixer is connected with the input end of the liquid supply balancer through a fourth pipeline, and the fourth pipeline is provided with a pump P3 and a circulating valve MV3; the fourth pipeline is connected with one end of the fifth pipeline, and the connection point is positioned between the pump P3 and the circulating valve MV3; the other end of the fifth pipeline is connected with a third input end of the mixer, and a circulating valve MV2 is arranged on the fifth pipeline; the output end of the liquid supply balancer is connected with an external pipeline through a sixth pipeline, and a pump P4 and a circulating valve MV4 are arranged on the sixth pipeline;

2. The concentrated supply dialysate device control system of claim 1, wherein the first conduit is connected to one end of a seventh conduit at a point between the first water inlet end of the water inlet balancer and the solenoid valve V1; the other end of the seventh pipeline extends below the liquid level of the disinfectant in the disinfectant container, and the seventh pipeline is provided with an electromagnetic valve V2 and a pump P1; and two paths of control signal output ends of the PLC are respectively and electrically connected with the control signal input ends of the electromagnetic valve V2 and the pump P1.

3. The concentrated-supply dialysate device control system of claim 1, wherein the fourth conduit is connected to one end of an eighth conduit at a point between the pump P3 and the circulation valve MV 3; the other end of the eighth pipeline extends into the discharge container, and a circulating valve MV5 is arranged on the eighth pipeline; one path of control signal output end of the PLC is electrically connected with the control signal input end of the circulating valve MV 5.

4. The concentrated-supply dialysate device control system of claim 3, wherein the sixth conduit is connected to one end of a ninth conduit at a point between the pump P4 and the circulation valve MV 4; the other end of the ninth pipeline is connected with the eighth pipeline, and a circulating valve MV6 is arranged on the ninth pipeline; one path of control signal output end of the PLC is electrically connected with the control signal input end of the circulating valve MV 6.

5. A method of operating a centralized-supply dialysate device control system, as applied to the centralized-supply dialysate device control system of claim 2, the method comprising:

6. The method of claim 5, further comprising:

7. The method of claim 6, further comprising:

8. The method according to claim 7, wherein the preset first time period, the preset second time period, and the preset third time period are each 60 seconds, the preset fourth time period is 180 seconds, the preset fifth time period is 12 seconds, and the preset sixth time period is 250 seconds.

9. The method of claim 5, further comprising:

10. The method of claim 5, further comprising: