CN112121187A - Concentrated solution centralized preparation and supply automatic steam disinfection system for hemodialysis - Google Patents

Concentrated solution centralized preparation and supply automatic steam disinfection system for hemodialysis Download PDF

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Publication number
CN112121187A
CN112121187A CN202011011013.0A CN202011011013A CN112121187A CN 112121187 A CN112121187 A CN 112121187A CN 202011011013 A CN202011011013 A CN 202011011013A CN 112121187 A CN112121187 A CN 112121187A
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liquid
liquid storage
pipeline
supply
storage tank
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阮安
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Wuhan Qicheng Biological Technology Co ltd
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Wuhan Qicheng Biological Technology Co ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/04—Heat
    • A61L2/06—Hot gas
    • A61L2/07—Steam
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/24—Apparatus using programmed or automatic operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/26—Accessories or devices or components used for biocidal treatment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
    • A61M1/1654—Dialysates therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
    • A61M1/1654—Dialysates therefor
    • A61M1/1656—Apparatus for preparing dialysates
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
    • A61M1/168—Sterilisation or cleaning before or after use
    • A61M1/1686—Sterilisation or cleaning before or after use by heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/45—Magnetic mixers; Mixers with magnetically driven stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/211—Measuring of the operational parameters
    • B01F35/2115—Temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/14—Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/2202—Mixing compositions or mixers in the medical or veterinary field

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  • Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Urology & Nephrology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Emergency Medicine (AREA)
  • Epidemiology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
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Abstract

The invention relates to an automatic steam disinfection system for concentrated solution centralized preparation and supply for hemodialysis, which comprises a stirring tank and a liquid storage tank, wherein the stirring tank is provided with a solution preparation assembly, a liquid outlet of the stirring tank is communicated with the liquid storage tank through a pipeline, and the liquid storage tank is a cache tank; the centralized distribution liquid supply automatic steam disinfection system also comprises a heat disinfection heater, a liquid inlet of the heat disinfection heater is communicated with a liquid outlet of the liquid storage tank through a pipeline, and a steam outlet of the heat disinfection heater is communicated with the middle part of the liquid storage tank through a pipeline; the liquid inlet and the steam outlet of the heat disinfection heater are both provided with control valves. The invention can realize sufficient and thorough heat sterilization of the liquid supply system and is convenient and fast to operate.

Description

Concentrated solution centralized preparation and supply automatic steam disinfection system for hemodialysis
Technical Field
The invention relates to the technical field of medical equipment, in particular to an automatic steam disinfection system for concentrated solution centralized preparation and supply for hemodialysis.
Background
Because of the continuous development of the dialysis industry and the enlargement of the hemodialysis scale, a dialysis center receives dialysis patients 100 times at a time, the traditional mode is a mode of manually carrying dialysate, one device needs two barrels of A/B dialysis concentrated solution, and the dialysate needs to be replaced in the use process, so that the quality of stock solution cannot be controlled, and the risk of pollution is increased. With the development of technology and the continuous improvement of living standard of people, dialysis patients have higher requirements on dialysis quality. Manufacturers are exploring concentrated liquid supply systems in recent years, but most of the concentrated liquid supply systems are not perfect, and the concentrated liquid supply systems are still in a starting stage at present, have different industrial technologies and no relevant international standards, and have many problems.
Firstly, the existing centralized liquid supply system is easy to seep and leak liquid, the liquid preparation is not accurate enough, the liquid preparation precision is unstable, the prepared liquid is unbalanced than the liquid, and the hemodialysis machine is alarmed to stop more seriously, so that the life is threatened. Secondly, the delivery pressure is difficult to control, and under the condition that a dialysis center is large in bed position, balanced liquid supply is difficult to achieve. Finally, the liquid supply pipeline of the equipment is easy to be polluted, particularly, the disinfection process is complicated and is difficult to clean, residues exist, compressed air is required to be used even if the disinfection process is carried out, and the compressed air is difficult to ensure to be clean. Although systems of a plurality of manufacturers have an automatic disinfection function, the disinfection effect is extremely poor, the duration is not sufficient, an overlong pipeline is difficult to clean, and the risk of disinfectant residue is easy to occur. And due to the adoption of heat sterilization, the temperature loss from the water temperature to the tail end is large, the tail end cannot reach the sterilization temperature, and the heat sterilization is not thorough enough.
Disclosure of Invention
The invention aims at least one technical problem in the prior art, provides an automatic steam disinfection system for concentrated solution centralized preparation and supply for hemodialysis, can realize sufficient and thorough heat disinfection on a liquid supply system, and is convenient and fast to operate.
The technical scheme for solving the technical problems is as follows: an automatic steam disinfection system for concentrated liquid preparation and supply for hemodialysis comprises a stirring tank and a liquid storage tank, wherein the stirring tank is provided with a liquid preparation assembly, a liquid outlet of the stirring tank is communicated with the liquid storage tank through a pipeline, and the liquid storage tank is a cache tank; the centralized distribution liquid supply automatic steam disinfection system also comprises a heat disinfection heater, a liquid inlet of the heat disinfection heater is communicated with a liquid outlet of the liquid storage tank through a pipeline, and a steam outlet of the heat disinfection heater is communicated with the middle part of the liquid storage tank through a pipeline; the liquid inlet and the steam outlet of the heat disinfection heater are both provided with control valves.
On the basis of the technical scheme, the invention can be further improved as follows.
Furthermore, the centralized liquid distribution and supply automatic steam disinfection system also comprises a liquid pushing and discharging valve for discharging steam, and the liquid pushing and discharging valve is arranged on a system pipeline.
Further, a liquid outlet of the liquid storage tank is provided with a liquid storage discharge valve which is a three-way valve, two ends of the liquid storage discharge valve are respectively communicated with the liquid outlet of the liquid storage tank and the liquid inlet of the thermal disinfection heater, and the third end of the liquid storage discharge valve is a liquid outlet.
Preferably, the heat disinfection heater comprises a liquid passing pipe and a heating assembly arranged outside the liquid passing pipe.
Preferably, the liquid storage tank is also provided with a filtering circulation pipeline, one end of the filtering circulation pipeline is communicated with a liquid outlet of the liquid storage tank, and the other end of the filtering circulation pipeline is communicated with a liquid inlet end of the liquid storage tank; and a first filter element is arranged on the filtering circulation pipeline and used for filtering liquid in the liquid storage tank.
Preferably, a circulating valve is arranged at a steam outlet of the heat disinfection heater, the circulating valve is a three-way valve, and three ends of the circulating valve are respectively communicated with the filtering and circulating pipeline, the steam outlet of the heat disinfection heater and the middle part of the liquid storage tank.
Preferably, the centralized liquid distribution and supply automatic steam sterilization system further comprises a pressure sensor, and the pressure sensor is arranged in a system pipeline.
Preferably, the centralized liquid distribution and supply automatic steam sterilization system further comprises a controller, the pressure sensor, the liquid storage discharge valve and the circulating valve are electrically connected with the controller, and the controller is used for controlling the opening and closing states of the liquid storage discharge valve and the circulating valve.
Preferably, the centralized liquid distribution and supply automatic steam sterilization system further comprises a controller, the liquid pushing discharge valve is electrically connected with the controller, and the controller is used for controlling the opening and closing states of the liquid pushing discharge valve.
Furthermore, the centralized distribution liquid supply automatic steam disinfection system further comprises a second filter element, and the second filter element is arranged on a connecting pipeline between the stirring tank and the liquid storage tank.
The invention has the beneficial effects that: the steam sterilization heater is externally arranged for steam heat sterilization, the system pipeline can be emptied by using steam pressure, and a new pollution source cannot be introduced; the steam sterilization device can fully sterilize the system pipeline through steam heat sterilization, does not leave sterilization dead angles, and ensures thorough sterilization.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1. the device comprises a stirring tank, a liquid storage tank, a heat sterilization heater, a liquid supply pump, a liquid storage discharge valve, a liquid pushing discharge valve, a circulating valve, a first filter element, a second filter element, a temperature compensator, a liquid distribution pump, a conductive sensor, a spraying valve, a water inlet valve, a water distribution pump, a liquid distribution discharge valve, a magnetic stirrer and a liquid supply pump, wherein the stirring tank is 2, the liquid storage tank is 3, the heat sterilization heater is 4, the liquid supply pump is 5, the liquid storage discharge.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in figure 1, the invention designs a hemodialysis concentrate centralized preparation liquid automatic steam disinfection system, including a stirring tank 1 and a liquid storage tank 2; agitator tank 1 is used for joining in marriage the liquid, and liquid storage pot 2 is used for the buffer memory stock solution, and agitator tank 1's liquid outlet passes through the pipeline and communicates with liquid storage pot 2.
The automatic steam disinfection system for concentrated liquid distribution and supply for hemodialysis further comprises a heat disinfection heater 3, a liquid inlet of the heat disinfection heater 3 is communicated with a liquid outlet of the liquid storage tank 2 through a pipeline, and a steam outlet of the heat disinfection heater 3 is also communicated with the middle of the liquid storage tank 2 through a pipeline.
The core of the automatic steam disinfection system for concentrated liquid preparation and supply for hemodialysis is a pipeline control part, the pipeline control part consists of a controller and a plurality of valves, and the whole system is a fully-sealed system.
The liquid outlet of agitator tank 1 is provided with joins in marriage liquid discharge valve 15, join in marriage liquid discharge valve 15 and be the three-way valve, be equipped with connector and leakage fluid dram. One end of a connecting pipeline of the stirring tank 1 and the liquid storage tank 2 is communicated with a connecting port of the liquid preparation discharge valve 15, and the other end of the connecting pipeline is communicated with a liquid inlet end of the liquid storage tank 2. And a water inlet valve 14 and a liquid dispensing pump 11 are sequentially arranged on a connecting pipeline of the stirring tank 1 and the liquid storage tank 2. The water inlet valve 14 is also a three-way valve, is arranged between the liquid dispensing pump 11 and the liquid dispensing discharge valve 15, and is provided with a water inlet.
The leakage fluid dram of liquid storage pot 2 is provided with stock solution bleeder valve 5, stock solution bleeder valve 5 is the three-way valve equally, is equipped with connector and leakage fluid dram. The liquid inlet of the heat disinfection heater 3 is communicated with the connecting port of the liquid storage discharge valve 5 through a pipeline.
The valves are all electric control valves and are electrically connected with the controller. The controller can be a programmable controller, and particularly, a CPU-SR60 controller manufactured by Siemens company can be selected. And the automatic control of the system is realized by pre-editing a valve control program. The valve control program is a control program which is edited according to the working principle of the invention and controls the opening and closing of each valve and/or the opening and closing mode.
In the prior art, the centralized liquid supply system is difficult to clean when chemical disinfection is adopted, and disinfectant is easy to remain; when the heat sterilization is adopted, the whole pipeline is difficult to cover. The inventor finds that the main reason of the above problem is that system emptying is difficult to realize after research. Although department manufacturers are equipped with compressed air devices to evacuate the system by using compressed air, the inventor finds that the compressed air is difficult to ensure cleanness and introduces new pollution after research. The compressed air pollution is the core reason that the prior system is difficult to realize complete disinfection, and the technical problem is not disclosed at present.
The invention adopts the external heat sterilization heater 3 to effectively solve the technical problem of both emptying and pollution. The invention is externally connected with a heat disinfection heater 3, namely a set of heated circulating pipelines are arranged beside the liquid storage tank 2, when in use, the disinfection steam generated by the heat disinfection heater 3 can be utilized to boost the pressure of the whole system pipeline, and the pressure generated by the steam is utilized to push out and discharge the liquid remained in the liquid storage tank 2 and the pipeline, thereby realizing evacuation. No new pollution source is introduced in the whole process, so that emptying is realized, and the pollution problem is also considered.
The invention also provides an improved technical scheme, wherein in the improved technical scheme, the liquid storage tank 2 is also provided with a filtering and circulating pipeline, one end of the filtering and circulating pipeline is communicated with a connecting port of the liquid storage discharge valve 5, and the other end of the filtering and circulating pipeline is communicated with a liquid inlet end of the liquid storage tank 2. And a first filter element 8 is arranged on the filtering circulation pipeline and is used for filtering the liquid in the liquid storage tank 2.
Preferably, a circulating valve 7 can be arranged at the steam outlet end of the thermal disinfection heater 3, the circulating valve 7 is also a three-way valve, one end of the circulating valve is communicated with the steam outlet of the thermal disinfection heater 3, the other end of the circulating valve is communicated with the liquid inlet end of the filtering and circulating pipeline, and the third end of the circulating valve is communicated with the middle part of the liquid storage tank 2.
Preferably, a push liquid discharge valve 6 may be provided on the filtration circulation line for discharging the sterilizing steam after sterilization.
In order to solve the problem of balanced liquid supply, a liquid supply pump 4 is arranged at a liquid discharge port of a liquid storage tank 2. The liquid supply pump 4 is preferably a variable frequency pump and can be connected to a connecting pipeline between the heat disinfection heater 3 and the liquid storage discharge valve 5. Thus, power can be provided for filtration and liquid supply.
The liquid supply pump 4, the circulating valve 7 and the liquid pushing and discharging valve 6 are also electrically connected with the controller.
A pressure sensor may be provided in the liquid supply system, the pressure sensor being electrically connected to the controller. And the liquid supply pressure of the system is monitored in real time by using the pressure sensor, and the liquid supply pump 4 is started to pressurize when the pressure is insufficient. A liquid level sensor can also be arranged in the liquid storage tank 2 and is also electrically connected with the controller. Thus, when the liquid level is higher, the liquid can be automatically supplied, and when the liquid level is lower, the liquid supply pump 4 is started to pressurize and supply the liquid.
In order to solve the problem of accurate liquid preparation, the invention is characterized in that a conductive sensor 12 is arranged on a connecting pipeline of the stirring tank 1 and the liquid storage tank 2, is electrically connected with a controller and is used for monitoring the conductivity of the prepared liquid in real time so as to judge whether the prepared liquid is accurate or not. If the conductivity is abnormal, the controller controls the relevant valves to cut off the connecting pipelines of the stirring tank 1 and the liquid storage tank 2, and the valves are opened after the liquid preparation is adjusted.
In order to ensure the safety, a second filter element 9 can be arranged on a connecting pipeline of the stirring tank 1 and the liquid storage tank 2 and used for filtering the prepared liquid.
In order to improve the liquid preparation efficiency, a magnetic stirrer 16 can be arranged in the stirring tank 1. The inventor finds that the liquid preparation efficiency can be improved by more than 50% by adopting water flow stirring and magnetic stirring, and the liquid preparation time is greatly saved.
In order to ensure that the liquid has a proper temperature during dialysis, the stirring tank 1 is further provided with a temperature compensation pipeline, one end of the temperature compensation pipeline is communicated with the top of the stirring tank 1, the other end of the temperature compensation pipeline is communicated with a liquid outlet of the stirring tank 1, and a temperature compensator 10 is arranged on the temperature compensation pipeline. A temperature sensor is arranged in the stirring tank 1 to monitor the temperature of the liquid.
Preferably, a spray valve 13 can be arranged between the liquid dispensing pump 11 and the second filter element 9 on the connecting pipeline of the stirring tank 1 and the liquid storage tank 2, and a three-way valve is adopted. One end of the temperature compensation pipeline is communicated with the spray valve 13, and the other end of the temperature compensation pipeline is communicated with the top of the stirring tank 1. The spray valve 13 is respectively communicated with the liquid dispensing pump 11, the second filter element 9 and the temperature compensator 10.
The working principle of the invention is as follows:
when the system is in normal operation:
firstly, liquid preparation is carried out, A/B liquid is injected into the stirring tank 1 through the water inlet valve 14 according to the optimal proportion, the spray valve 13 is closed, the liquid preparation pump 11 is opened, and rotational flow is formed in the stirring tank 1 by the pressure of the liquid inlet, so that water flow stirring is realized. At the same time, the magnetic stirrer 16 is also turned on, and magnetic stirring is performed. In this process, the liquid discharge port of the liquid dispensing discharge valve 15 is closed. When the liquid is prepared, the temperature sensor in the stirring tank 1 monitors the temperature in real time, if the temperature is not suitable, the spray valve 13 is opened to connect the two ends of the temperature compensator 10 and the liquid preparation pump 11 after the liquid preparation is finished, and the liquid temperature is adjusted to be in a suitable state by using the liquid preparation pump 11 to pump and circulate.
Then, the liquid is stored in a buffer memory, one end of the spray valve 13 connected with the temperature compensator 10 is closed, the connecting pipeline of the stirring tank 1 and the liquid storage tank 2 is opened, and the prepared liquid is pumped to the liquid storage tank 2 for buffer memory by using the liquid preparation pump 11. In the process, the conductivity sensor 12 monitors the conductivity of the liquid in real time, if the conductivity is abnormal, the spray valve 13 is closed, and the liquid preparation operation is executed again. When the prepared liquid in the stirring tank 1 is pumped to the liquid storage tank 2, the liquid is filtered by the second filter element 9.
And finally, carrying out transfusion, starting a liquid storage and discharge valve 5, and conveying the liquid to a dialysis terminal in a self-flowing liquid supply mode. In the process, a liquid level sensor in the liquid storage tank 2 monitors the liquid level in real time, and if the liquid level is lower than a limit value, a liquid supply pump 4 is started to pressurize and supply liquid.
When system disinfection is required:
firstly, the heat disinfection heater 3 is started, the liquid outlet of the liquid storage discharge valve 5 is closed, and liquid in the liquid storage tank flows through the heat disinfection heater 3 to be heated to form steam.
And secondly, emptying, namely opening a circulating valve 7, conveying steam into the liquid storage tank 2, then opening a liquid discharge port of a liquid storage discharge valve 5 and a liquid discharge port of a liquid distribution discharge valve 15, emptying the liquid in the liquid storage tank 2 and the stirring tank 1 by utilizing steam pressure, and simultaneously emptying all residual liquid in the pipeline of the whole system.
And finally, performing heat sterilization, monitoring the pressure in the system pipeline, when the pressure reaches a preset value, filling the whole pipeline with steam, closing the heat sterilization heater 3, and after the sterilization duration is reached, opening the liquid pushing and discharging valve 6 to discharge the steam, thereby completing the whole heat sterilization process.
The heat disinfection heater 3 of the invention adopts a structure that a heating component is arranged outside the pipe, and can be used as a pipeline during normal operation and as a heater during disinfection.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. The utility model provides a concentrated solution is concentrated and is joined in marriage confession liquid automatic steam disinfection system for hemodialysis, includes agitator tank (1) and liquid storage pot (2), agitator tank (1) is equipped with joins in marriage the liquid subassembly, the liquid outlet of agitator tank (1) passes through pipeline and liquid storage pot (2) intercommunication, its characterized in that: the liquid storage tank (2) is a cache tank; the centralized distribution liquid supply automatic steam disinfection system also comprises a heat disinfection heater (3), wherein a liquid inlet of the heat disinfection heater (3) is communicated with a liquid outlet of the liquid storage tank (2) through a pipeline, and a steam outlet of the heat disinfection heater (3) is communicated with the middle part of the liquid storage tank (2) through a pipeline; the liquid inlet and the steam outlet of the heat disinfection heater (3) are both provided with control valves.
2. The automatic steam disinfection system for concentrated solution centralized preparation and supply for hemodialysis according to claim 1, wherein: the centralized liquid distribution and supply automatic steam disinfection system further comprises a liquid pushing and discharging valve (6) for discharging steam, and the liquid pushing and discharging valve (6) is arranged on a system pipeline.
3. The automatic steam disinfection system for concentrated solution centralized preparation and supply for hemodialysis according to claim 1, wherein: the liquid outlet of the liquid storage tank (2) is provided with a liquid storage discharge valve (5), the liquid storage discharge valve (5) is a three-way valve, two ends of the three-way valve are respectively communicated with the liquid outlet of the liquid storage tank (2) and the liquid inlet of the thermal disinfection heater (3), and the third end of the three-way valve is a liquid outlet.
4. The automatic steam disinfection system for concentrated solution centralized preparation and supply for hemodialysis of claim 3, wherein: the heat disinfection heater (3) comprises a liquid passing pipeline and a heating assembly arranged outside the liquid passing pipeline.
5. The automatic steam disinfection system for concentrated solution centralized preparation and supply for hemodialysis of claim 4, wherein: the liquid storage tank (2) is also provided with a filtering circulation pipeline, one end of the filtering circulation pipeline is communicated with a liquid outlet of the liquid storage tank (2), and the other end of the filtering circulation pipeline is communicated with a liquid inlet end of the liquid storage tank (2); the first filter element (2) is arranged on the filtering circulation pipeline and is used for filtering liquid in the liquid storage tank (2).
6. The automatic steam disinfection system for concentrated solution centralized preparation and supply for hemodialysis of claim 5, wherein: a circulating valve (7) is arranged at a steam outlet of the heat disinfection heater (3), the circulating valve (7) is a three-way valve, and the three ends of the circulating valve are respectively communicated with the filtering and circulating pipeline, the steam outlet of the heat disinfection heater (3) and the middle part of the liquid storage tank (2).
7. The automatic steam disinfection system for concentrated solution centralized preparation and supply for hemodialysis of claim 6, wherein: the centralized liquid distribution and supply automatic steam sterilization system further comprises a pressure sensor, and the pressure sensor is arranged in a system pipeline.
8. The automatic steam disinfection system for concentrated solution centralized preparation and supply for hemodialysis of claim 7, wherein: the centralized distribution liquid supply automatic steam sterilization system further comprises a controller, the pressure sensor, the liquid storage discharge valve (5) and the circulating valve (7) are electrically connected with the controller, and the controller is used for controlling the opening, closing and opening states of the liquid storage discharge valve (5) and the circulating valve (7).
9. The automatic steam disinfection system for concentrated solution centralized preparation and supply for hemodialysis of claim 2, wherein: the automatic centralized liquid distribution and supply steam sterilization system further comprises a controller, the liquid pushing and discharging valve (6) is electrically connected with the controller, and the controller is used for controlling the opening and closing states of the liquid pushing and discharging valve (6).
10. The automatic steam disinfection system for concentrated solution centralized preparation and supply for hemodialysis according to any one of claims 1 to 9, wherein: the centralized distribution and liquid supply automatic steam disinfection system further comprises a second filter element (9), wherein the second filter element (9) is arranged on a connecting pipeline between the stirring tank (1) and the liquid storage tank (2).
CN202011011013.0A 2020-09-23 2020-09-23 Concentrated solution centralized preparation and supply automatic steam disinfection system for hemodialysis Pending CN112121187A (en)

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