CN116531587A - Hierarchical centralized liquid supply pipeline and liquid supply method thereof - Google Patents
Hierarchical centralized liquid supply pipeline and liquid supply method thereof Download PDFInfo
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- 239000007788 liquid Substances 0.000 title claims abstract description 247
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000001631 haemodialysis Methods 0.000 claims abstract description 50
- 230000000322 hemodialysis Effects 0.000 claims abstract description 50
- 238000000502 dialysis Methods 0.000 claims abstract description 24
- 238000001802 infusion Methods 0.000 claims abstract description 17
- 239000002699 waste material Substances 0.000 claims description 17
- 230000001502 supplementing effect Effects 0.000 claims description 5
- 230000032683 aging Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000004659 sterilization and disinfection Methods 0.000 description 12
- 239000012530 fluid Substances 0.000 description 10
- 230000001954 sterilising effect Effects 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 5
- 239000012141 concentrate Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 239000000645 desinfectant Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000011049 filling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- 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
- A61M1/1657—Apparatus for preparing dialysates with centralised supply of dialysate or constituent thereof for more than one dialysis unit
-
- 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
- A61M1/15—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with a cassette forming partially or totally the flow circuit for the treating fluid, e.g. the dialysate fluid circuit or the treating gas circuit
- A61M1/156—Constructional details of the cassette, e.g. specific details on material or shape
- A61M1/1565—Details of valves
-
- 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
-
- 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
- A61M1/1621—Constructional aspects thereof
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Urology & Nephrology (AREA)
- Anesthesiology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Emergency Medicine (AREA)
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Abstract
The invention relates to the technical field of dialysis liquid supply, in particular to a layered centralized liquid supply pipeline and a liquid supply method thereof, wherein the liquid supply pipeline comprises a primary main pipeline, a secondary main pipeline and a plurality of terminal interfaces, a buffer tank is connected between the primary main pipeline and the secondary main pipeline, the secondary main pipeline is provided with a liquid inlet and a liquid return port, the liquid inlet and the liquid return port are respectively connected with the buffer tank, the secondary main pipeline forms a closed circulation pipeline, the terminal interfaces are respectively communicated with the secondary main pipeline, each terminal interface is respectively provided with a liquid supply port and a liquid outlet, the liquid supply port is provided with a first one-way valve, and the liquid outlet is provided with a second one-way valve; in order to overcome the defect that repeated plugging and unplugging of the hemodialysis machine and the central infusion pipeline are required in the prior art, the invention can realize low-pressure liquid supply of the centralized liquid supply system to the hemodialysis machine, so that the central infusion pipeline is always connected with the hemodialysis machine without repeated connection and disconnection, thereby avoiding the risks of ageing and damage of a quick connector and misoperation, and reducing the plugging and unplugging of the pipeline.
Description
Technical Field
The invention relates to the technical field of dialysis liquid supply, in particular to a layering centralized liquid supply pipeline and a liquid supply method thereof.
Background
The centralized liquid supply system is a system for preparing, filtering, storing concentrated liquid for dialysis and simultaneously conveying the concentrated liquid for dialysis to a plurality of hemodialysis machines through a central liquid conveying pipeline. When the existing centralized liquid supply system is used, concentrated liquid is prepared in a preparation room in a centralized way, the concentrated liquid is filtered and stored in a closed container, and then the concentrated liquid is conveyed to blood-permeable machines of all blood-permeable rooms through a liquid supply pump for dialysis through a central infusion pipeline, wherein a quick connector is arranged on the central infusion pipeline and used for manually connecting a liquid suction pipeline into the central infusion pipeline for dialysis, and the blood-permeable machines are required to be manually separated from the central infusion pipeline after the dialysis is finished.
However, the central infusion pipeline needs to be emptied of pipeline air with larger pressure before liquid supply, so that the pipeline can be normally dialyzed after being fully filled with liquid, in order to prevent the dialysis machine from being damaged by the larger pipeline pressure, the quick connector of the central infusion pipeline needs to be disconnected with the dialysis machine, the infusion pipeline is reconnected during normal dialysis operation, and meanwhile, each hemodialysis machine needs to be subjected to repeated dialysis operation for a plurality of times in one day, so that the quick connector between the central infusion pipeline and the hemodialysis machine needs to be frequently and repeatedly plugged, the operation is complex, time and labor are wasted, medical accidents are caused by leakage operation, in addition, the repeated plugging of the quick connector is easy to age, frequent replacement and maintenance are needed, and the cost is increased.
Disclosure of Invention
The invention provides a layering centralized liquid supply pipeline and a liquid supply method thereof, which can realize low-pressure liquid supply of a centralized liquid supply system to the hemodialysis machine so that the central liquid supply pipeline is always connected with the hemodialysis machine without repeated connection and disconnection, thereby avoiding operation damage of the hemodialysis machine and reducing the plugging and unplugging of the pipelines.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a centralized liquid supply pipeline of layering, includes one-level main line, second grade main line and a plurality of terminal interface, one-level main line with be connected with the buffer tank between the second grade main line, the second grade main line is equipped with inlet and liquid return mouth, the inlet with liquid return mouth respectively with the buffer tank is connected, makes the second grade main line forms closed circulation pipeline, a plurality of terminal interface respectively with second grade main line intercommunication, each terminal interface is equipped with liquid supply mouth and waste liquid mouth respectively, liquid supply mouth department is equipped with first check valve, waste liquid mouth department is equipped with the second check valve.
Further, the position of the connecting port between the liquid inlet and the buffer tank is lower than the position of the connecting port between the liquid return port and the buffer tank.
Further, the opening pressure of the second one-way valve is greater than the opening pressure of the first one-way valve.
Further, a first electric valve for switching the liquid supply port connecting pipeline and the waste liquid port connecting pipeline is arranged at the terminal interface.
Further, a stop valve is arranged between the liquid return port and the terminal interface on the secondary main pipeline.
Further, the pipe diameter of the liquid supply port is smaller than that of the secondary main pipeline.
Further, a circulating pump is arranged on the secondary main pipeline.
Further, a plurality of liquid supplementing ports are arranged between the primary main pipeline and the buffer tank, and overflow ports are arranged on the buffer tank.
Further, the outflow flow of the overflow port is larger than the inflow flow of the fluid supplementing port.
Furthermore, the invention also provides a liquid supply method which is implemented by using the hierarchical centralized liquid supply pipeline and can respectively carry out the circulation operation and the dialysis operation, and the method comprises the following specific steps:
s1: connecting the primary main pipeline with a liquid supply main machine, and conveying concentrated liquid from the liquid supply main machine into a buffer tank of a hemodialysis room by using the primary main pipeline as a first-layer liquid supply structure;
s2: when the concentrated solution in the buffer tank reaches a set quantity, the secondary main pipeline is used as a secondary liquid supply structure to convey the concentrated solution to each terminal interface;
s3: the terminal interface is used as a three-layer liquid supply structure, at the moment, because the pressure in the pipeline does not reach the opening pressure of the first one-way valve and the second one-way valve, concentrated liquid flows through the liquid inlet and the liquid return port of the secondary main pipeline and flows back to the buffer tank to exhaust the gas in the infusion pipeline, and the circulating operation is completed;
s4: the liquid supply port is connected with the liquid suction port of the hemodialysis machine, after the liquid suction port of the hemodialysis machine starts to suck liquid, negative pressure is formed between the liquid supply port and the liquid suction port, the opening pressure of the first one-way valve is reached, so that the liquid supply port is opened, and liquid is supplied to the hemodialysis machine through each pipeline to perform dialysis operation.
Compared with the prior art, the invention has the following beneficial effects:
according to the hierarchical centralized liquid supply pipeline provided by the invention, through the arrangement design of the primary main pipeline, the secondary main pipeline and the terminal interfaces, the hierarchical liquid supply pipeline structure is realized, the pressure in the pipeline is reduced, namely, the primary main pipeline is used as a first-layer liquid supply structure, concentrated liquid is conveyed from a liquid supply host to a buffer tank of a hemodialysis room, the secondary main pipeline is used as a second-layer liquid supply structure, the concentrated liquid is conveyed to each terminal interface, the circulating operation is finished, the pipeline air is emptied, the terminal interfaces are used as a three-layer liquid supply structure, and the dialysis operation is finished by using the liquid supply ports.
Drawings
FIG. 1 is a schematic diagram of a structure of a secondary main pipeline and a terminal interface connecting pipeline in the invention;
FIG. 2 is a schematic structural diagram of a connecting pipeline without a first electric valve at a terminal interface in the invention;
FIG. 3 is a schematic diagram of the connection structure of the primary main pipeline and the secondary main pipeline in the present invention.
Reference numerals: 1-a primary main pipeline; 2-secondary main pipeline; 3-terminal interface; 4-a liquid inlet; 5-a buffer tank; 6, a liquid supply port; 7-a waste liquid port; 8-a first one-way valve; 9-a second one-way valve; 10-a first electrically operated valve; 11-a stop valve; 12-a circulation pump; 13-a fluid supplementing port; 14-overflow port; 15-a liquid level sensor; 16-liquid outlet; 17-a first ball valve; 18-a second ball valve; 19-a second electrically operated valve; 20-an air filter element; 21-a liquid suction rod of the hemodialysis machine; 22-extension branches; 23-liquid return port.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. The invention is described in one of its examples in connection with the following detailed description. Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1 and 3, this embodiment provides a centralized hierarchical liquid supply pipeline, including one-level main pipeline 1, second grade main pipeline 2 and a plurality of terminal interfaces 3, be connected with buffer tank 5 between one-level main pipeline 1 and the second grade main pipeline 2, second grade main pipeline (2) are equipped with inlet 4 and return liquid mouth 23, inlet 4 and return liquid mouth 23 are connected with buffer tank 5 respectively for second grade main pipeline 2 forms closed circulation pipeline, a plurality of terminal interfaces 3 communicate with second grade main pipeline 2 respectively, each terminal interface 3 is equipped with liquid supply mouth 6 and waste liquid mouth 7 respectively, liquid supply mouth 6 department is equipped with first check valve 8, waste liquid mouth 7 department is equipped with second check valve 9.
It should be noted that, the primary main pipeline 1 is used for delivering the concentrated solution from the main liquid supply machine to the buffer tank 5 of the hemodialysis room, the primary main pipeline 1 can be provided with a plurality of sub-branches 22, each sub-branch 22 is respectively provided with the buffer tank 5, the secondary pipeline and the terminal interface 3, so as to realize multi-pipeline liquid supply, wherein the secondary main pipeline 2 is used for delivering the concentrated solution in the buffer tank 5 to the terminal interface 3, and the secondary main pipeline 2 can be connected with 5-20 terminal interfaces 3, namely, is set as a certain hemodialysis machine access amount, so that the liquid supply is ensured to be sufficient, the access amount is not too small, the cost is not wasted, if the hemodialysis machine is not throttled, the volume of the buffer tank 5 is increased, the pipeline pressure is insufficient to realize low-pressure liquid supply, the occupied space of the pipeline is increased, and the use is not facilitated;
specifically, a first three-way joint is arranged at each terminal interface 3, one end of the first three-way joint is used for being connected with the secondary main pipeline 2, the other two ends of the first three-way joint are respectively used for being connected with a liquid supply port 6 and a waste liquid port 7, wherein the liquid supply port 6 is used for being connected with a liquid suction port of a hemodialysis machine for supplying liquid to a patient for dialysis operation, the waste liquid port 7 is used for discharging gas in the pipeline, the secondary main pipeline 2 is facilitated to complete the circulating operation, the gas in the liquid supply pipeline is discharged, the subsequent dialysis operation is facilitated, in addition, in order to facilitate the omnibearing dead angle-free cleaning and disinfection of the liquid supply pipeline, a stop valve 11 is preferably arranged on the secondary main pipeline 2, namely, the liquid supply pipeline is matched with the stop valve 11 on the secondary main pipeline 2 by utilizing the waste liquid port 7 to perform cleaning and disinfection and a concentrated liquid filling path, so that the subsequent dead angle-free disinfection operation on the pipeline is facilitated, namely, the primary main pipeline 1 provides sterilizing liquid, the primary main pipeline 1 conveys the sterilizing liquid to the buffer tank 5, at the moment, the stop valve 11 on the secondary main pipeline 2 is closed, so that the pipe pressure of the secondary main pipeline 2 is increased, the opening pressure of the second one-way valve 9 for opening the waste liquid port 7 is reached, the sterilizing liquid flows out of the waste liquid port 7 from the secondary main pipeline 2, the purpose of sterilizing and dialyzing the branch pipe is achieved, then the stop valve 11 is opened, the pressure in the secondary main pipeline 2 is reduced, so that the pressure is insufficient to open the second one-way valve 9 at the waste liquid port 7, the sterilizing liquid flows back to the buffer tank 5 through the secondary main pipeline 2, further, the non-dead space sterilization is carried out on the liquid supply pipeline, and in order to provide additional power for further sterilization operation and pipe circulating operation, a circulating pump 12 is preferably arranged on the secondary main pipeline 2.
Further, in order to control the conduction and flow direction of the connecting lines at the liquid supply port 6, the liquid discharge port 7, and the liquid suction rod 21, it is preferable that a first electrically operated valve 10 for switching the line paths between the liquid supply port 6 and the liquid discharge port 7 and between the liquid suction rod 21 for the cleaning and disinfecting.
Meanwhile, in this embodiment, the first check valve 8 is further disposed at the liquid supply port 6, preferably, the opening pressure of the first check valve 8 is 8-12Kpa, so as to prevent the concentrated liquid from overflowing from the liquid supply port 6 during manual misoperation, and simultaneously, the concentrated liquid can be prevented from being reversely polluted during cleaning and disinfection of the hemodialysis machine, correspondingly, the second check valve 9 is disposed at the liquid discharge port 7, preferably, the opening pressure of the second check valve 9 is 16-20Kpa, and the liquid discharge port 7 is conducted only when the stop valve 11 in the secondary main pipeline 2 is closed, the first electric valve 10 is closed and the circulation pump 12 is opened, thereby realizing filling and cleaning and disinfection operations of the liquid supply pipeline.
When the embodiment is used, the layering liquid supply pipeline structure is realized through the arrangement design of the primary main pipeline 1, the secondary main pipeline 2 and the terminal interfaces 3, namely, the primary main pipeline 1 is used as a first-layer liquid supply structure, concentrated liquid is conveyed into the buffer tank 5 of the hemodialysis room from the liquid supply host, the secondary main pipeline 2 is used as a second-layer liquid supply structure, the concentrated liquid is conveyed to each terminal interface 3, the circulating operation is finished, the terminal interfaces 3 are used as a three-layer liquid supply structure, the dialysis operation is finished by using the liquid supply ports 6, the switching of different operation modes can be realized without repeatedly switching the plug connectors, and the time and the labor are saved;
meanwhile, the first-stage main pipeline 1 and the second-stage main pipeline 2 are isolated through the buffer tank 5, so that the pressure in the first-stage main pipeline 1 can be controlled without strict control, the transfusion setting is simple, the second-stage main pipeline 2 can be grouped according to the building environment of the hemodialysis room, the length of a liquid supply pipeline and the pipeline installation levelness can be flexibly controlled, and the liquid is supplied by the self gravity of the liquid in the buffer tank, so that the pressure is extremely low and the hemodialysis machine is not damaged;
in addition, this application sets up the check valve respectively at liquid feed inlet 6 and waste liquid mouth 7, through adding on each check valve and opening pressure, even when the hemodialysis machine is in standby state, do not cut off the connection with liquid feed inlet 6, also can not appear leaking the liquid phenomenon, and during traditional liquid mode, because only through plug connection between liquid feed inlet 6 and the hemodialysis machine, there is not extra management and control structure, if do not break the liquid supply pipeline, then concentrate can continue to carry to the hemodialysis machine, and then follow the imbibition mouth outflow of hemodialysis machine, take place leaking the liquid phenomenon.
Further, as shown in fig. 1, in order to further realize low pressure liquid supply and reduce the pressure in the pipeline, in this embodiment, the position of the connection port between the liquid inlet 4 and the buffer tank 5 is lower than the position of the connection port between the liquid outlet 23 and the buffer tank 5, so that liquid can flow in the pipeline to the liquid supply port 6 through the gravity of the liquid to realize liquid supply, thereby reducing additional pressurization and reducing damage to the hemodialysis machine.
Further, in this embodiment, in order to further reduce the pipeline pressure in the secondary pipeline, the secondary main pipeline 2 is preferably set to be horizontal, and by adjusting the height of the buffer tank 5, the concentrate in the buffer tank can be conveyed completely by self gravity, so that the pressure of the concentrate in the pipeline is close to the pressure when the concentrate is sucked into the barrel of the hemodialysis machine, and the damage to the hemodialysis machine is reduced.
Further, as shown in fig. 1, in order to avoid frequent plugging and unplugging of the connector, in this embodiment, the first electric valve 10 used for being connected with the liquid suction port of the hemodialysis machine is disposed at the liquid supply port 6, the conventional quick connector is replaced by the first electric valve 10, the on-off of the liquid supply port 6 can be controlled without frequent plugging and unplugging, that is, the first electric valve 10 is further disposed on the basis of the first one-way valve 8, even if the opening pressure of the first one-way valve 8 is reached, if the first electric valve 10 is not opened, the liquid supply port 6 still cannot be communicated, liquid leakage is avoided, meanwhile, as shown in fig. 2, the liquid supply port 6 without the first electric valve 10 is required to be plugged and unplugged as in the conventional liquid supply mode, that is, the quick connector needs to be plugged and unplugged frequently, the quick connector is contacted with air in the plugging and unplugged process, the liquid leakage of the connector is easy to be caused, frequent maintenance is required, in this application, the first electric valve 10 is an electromagnetic valve, on-off can be realized without plugging and unplugging, the liquid leakage and crystallization are not easy, and the service life of the device is long.
Further, as shown in fig. 1, in this embodiment, it is preferable that the pipe diameter of the liquid supply port 6 is smaller than the pipe diameter of the secondary main pipeline 2, that is, the connection of the reducing pipeline is realized through the first three-way joint at the terminal interface 3, so as to ensure that the flow rate in each branch is relatively constant.
Further, as shown in fig. 1, to supplement the liquid in the buffer tank 5 and maintain the liquid level in the buffer tank 5, in this embodiment, a plurality of liquid supplementing ports 13 are provided between the primary main pipeline 1 and the buffer tank 5, and an overflow port 14 is provided on the buffer tank 5.
It should be noted that, a second three-way joint is provided between the primary main pipeline 1 and the buffer tank 5, one end of the second three-way joint is connected with the fluid infusion port 13, the other two ends of the second three-way joint are respectively connected with the primary main pipeline 1 and the buffer tank 5, the number of the fluid infusion ports 13 can be freely adjusted, preferably, the second three-way joint is a reducing three-way joint, a normally closed second electric valve 19 and a first ball valve 17 are respectively provided on a connecting pipeline of the primary main pipeline 1 and the buffer tank 5 for controlling the connection of the primary main pipeline 1 and the buffer tank 5 and disconnection and maintenance when failure occurs, in addition, in this embodiment, the outflow flow of the overflow port 14 is preferably greater than the inflow flow of the fluid infusion port 13, and the overflow port 14 is provided with an air filter element 20, namely, if the fluid infusion is too much, the fluid can rapidly flow out through the overflow port 14 for maintaining the fluid level in the buffer tank 5, for monitoring the fluid level in the buffer tank 5, and the buffer tank 5 is provided with a fluid level sensor 15.
Further, as shown in fig. 1, a liquid outlet 16 is arranged on the secondary main pipeline 2, so that liquid in the pipeline can be conveniently discharged, and a second ball valve 18 is arranged on the secondary main pipeline 2, so that the maintenance is conveniently disconnected when a fault occurs.
Further, as shown in fig. 1, in this embodiment, the liquid supply port 6 is a two-end port, one end is used for connecting to the liquid suction rod 21 of the hemodialysis machine, and the other end is used for connecting to the liquid suction port of the hemodialysis machine.
Example 2
As shown in fig. 1 and 3, the present embodiment provides a liquid supply method, which is implemented based on the hierarchical centralized liquid supply pipeline in embodiment 1, and can perform a circulation operation and a dialysis operation, respectively, and specifically comprises the following steps:
s1: the primary main pipeline 1 is connected with a liquid supply main machine, and concentrated liquid is conveyed into a buffer tank 5 of a hemodialysis room from the liquid supply main machine by using the primary main pipeline 1 as a first-layer liquid supply structure;
s2: when the concentrated solution in the buffer tank 5 reaches a set quantity, the concentrated solution is conveyed to each terminal interface 3 by using the secondary main pipeline 2 as a two-layer liquid supply structure;
s3: the terminal interface 3 is used as a three-layer liquid supply structure, at the moment, because the pressure in the pipeline does not reach the opening pressure of the first one-way valve 8 and the second one-way valve 9, concentrated liquid flows back to the buffer tank 5 through the liquid inlet 4 and the liquid outlet 23 of the secondary main pipeline 2 and is used for exhausting the gas in the infusion pipeline, and the pipe circulation operation is completed;
s4: the liquid supply port 6 is connected with a liquid suction port of the hemodialysis machine, and after the liquid suction port of the hemodialysis machine starts to suck liquid, negative pressure is formed between the liquid supply port 6 and the liquid suction port, and the opening pressure of the first one-way valve 8 is reached, so that the liquid supply port 6 is opened, liquid is supplied to the hemodialysis machine, and dialysis operation is performed.
It should be noted that, when the traditional liquid supply pipeline is in the operation of circulating the pipe, circulating the pipe pressure is too high, if connect the hemodialysis machine simultaneously and carry out dialysis operation, can damage the hemodialysis machine, and can endanger patient's safety when serious, and in this embodiment, because the design of liquid supply pipeline layering, the length and the levelness of secondary main pipeline 2 are controllable, consequently extreme pressure on the secondary main pipeline 2 can be in safe pressure, can avoid the risk, and in this embodiment, terminal interface 3 designs into the reducing throttle, can carry out the operation of circulating the pipe when supplying liquid mouth 6 and hemodialysis machine are connected, need not to plug repeatedly.
Further, the first electric valve 10 disposed at the liquid supply port 6 is matched, and the embodiment can also implement disinfection operation, which comprises the following specific steps:
s5: the primary main pipeline 1 is utilized to provide disinfectant, the primary main pipeline 1 conveys the disinfectant to the buffer tank 5, at the moment, the circulating pump 12 on the secondary main pipeline 2 is opened, the first electric valve 10 is closed, the stop valve 11 is fully opened, the pipeline pressure on the secondary main pipeline 2 is insufficient to open the second one-way valve 9, the disinfectant is caused to circulate in the secondary main pipeline 2 and the buffer tank 5, then the stop valve 11 is closed, the pipeline pressure on the secondary main pipeline 2 is increased, the opening pressure of the second one-way valve 9 is reached, the disinfectant can flow out from the waste liquid port 7, and the disinfection of the pipeline without dead space is realized.
In this embodiment, the first electric valve 10 may be interlocked with the liquid supply port 6, that is, the first electric valve 10 is closed during sterilization, at this time, the liquid supply port 6 may be disconnected, that is, the centralized liquid supply system is isolated from the hemodialysis machine, and the liquid supply port 6 and the liquid suction rod 21 of the hemodialysis machine are connected, so that the hemodialysis machine may perform sterilization or dialysis normally; when the dialysis operation is performed, the first electric valve 10 is opened, the path between the liquid supply port 6 and the terminal interface 3 can be connected, normal liquid suction of the hemodialysis machine is guaranteed, the path between the liquid supply port 6 and the liquid suction rod 21 of the hemodialysis machine is cut off, at the moment, the hemodialysis machine cannot sterilize, and the conventional pipeline sterilization mode can only rely on manual separation and error prevention, so that time and labor are wasted.
In the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances. In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B meet at the same time.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc., or direct/indirect use in other related technical fields, which are within the spirit and principle of the present invention, should be included in the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a centralized liquid supply pipeline of layering, its characterized in that, includes one-level main line (1), second grade main line (2) and a plurality of terminal interface (3), one-level main line (1) with be connected with buffer tank (5) between second grade main line (2), second grade main line (2) are equipped with feed liquor mouth (4) and return liquid mouth (23), feed liquor mouth (4) with return liquid mouth (23) respectively with buffer tank (5) are connected for second grade main line (2) form closed circulation line, a plurality of terminal interface (3) respectively with second grade main line (2) intercommunication, each terminal interface (3) are equipped with feed liquor mouth (6) and waste liquid mouth (7) respectively, feed liquor mouth (6) department is equipped with first check valve (8), waste liquid mouth (7) department is equipped with second check valve (9).
2. A hierarchical centralized liquid supply pipeline according to claim 1, characterized in that the connection port position of the liquid inlet (4) and the buffer tank (5) is lower than the connection port position of the liquid return port (23) and the buffer tank (5).
3. A hierarchical concentrated liquid supply line according to claim 2, characterized in that the opening pressure of the second non-return valve (9) is greater than the opening pressure of the first non-return valve (8).
4. A hierarchical concentrated liquid supply pipeline according to claim 3, characterized in that the terminal interface (3) is provided with a first electrically operated valve (10) for switching the liquid supply port (6) connecting pipeline and the waste liquid port (7) connecting pipeline.
5. A hierarchical centralized liquid supply pipeline according to claim 4, characterized in that a stop valve (11) is arranged between the liquid return port (23) on the secondary main pipeline (2) and the terminal interface (3).
6. A hierarchical concentrated liquid supply pipeline according to claim 5, characterized in that the pipe diameter of the liquid supply port (6) is smaller than the pipe diameter of the secondary main pipeline (2).
7. A hierarchical centralized liquid supply pipeline according to claim 6, characterized in that the secondary main pipeline (2) is provided with a circulating pump (12).
8. A centralized layered liquid supply pipeline according to any one of claims 1-7, characterized in that a plurality of liquid supplementing ports (13) are arranged between the primary main pipeline (1) and the buffer tank (5), and overflow ports (14) are arranged on the buffer tank (5).
9. A hierarchical concentrated liquid supply line according to claim 8, characterized in that the outflow of the overflow port (14) is greater than the inflow of the liquid replenishment port (13).
10. A method for supplying liquid, characterized in that the method is implemented on the basis of a hierarchical centralized liquid supply pipeline according to any one of claims 1-9, and can respectively carry out the circulation operation and the dialysis operation, and comprises the following specific steps:
s1: the primary main pipeline (1) is connected with a liquid supply main machine, and concentrated liquid is conveyed into a buffer tank (5) of the hemodialysis room from the liquid supply main machine by using the primary main pipeline (1) as a first-layer liquid supply structure;
s2: when the concentrated solution in the buffer tank (5) reaches a set quantity, the concentrated solution is conveyed to each terminal interface (3) by using the secondary main pipeline (2) as a two-layer liquid supply structure;
s3: the terminal interface (3) is used as a three-layer liquid supply structure, at the moment, because the pressure in the pipeline does not reach the opening pressure of the first one-way valve (8) and the second one-way valve (9), concentrated liquid sequentially flows through the liquid inlet (4) and the liquid return port (23) of the secondary main pipeline (2) and flows back to the buffer tank (5) to exhaust the gas in the infusion pipeline, and the circulating operation is completed;
s4: the liquid supply port (6) is connected with a liquid suction port of the hemodialysis machine, after the liquid suction port of the hemodialysis machine starts to suck liquid, negative pressure is formed between the liquid supply port (6) and the liquid suction port, and the opening pressure of the first one-way valve (8) is reached, so that the liquid supply port (6) is opened, and liquid supply to the hemodialysis machine is started to perform dialysis operation through all pipelines.
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|---|---|---|---|
| CN202310494395.4A CN116531587A (en) | 2023-04-28 | 2023-04-28 | Hierarchical centralized liquid supply pipeline and liquid supply method thereof |
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| CN202310494395.4A CN116531587A (en) | 2023-04-28 | 2023-04-28 | Hierarchical centralized liquid supply pipeline and liquid supply method thereof |
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