Water treatment and disinfection device for hemodialysis

Abstract

The utility model discloses a water treatment disinfection device for hemodialysis, which comprises a water storage tank, a primary reverse osmosis device and a secondary reverse osmosis device, the output end of the water storage tank is connected with the input end of the primary reverse osmosis device, the pure water output end of the primary reverse osmosis device is connected with the input end of the secondary reverse osmosis device, and the output end of the secondary reverse osmosis device is connected with the output end of the primary reverse osmosis device. The concentrated water output end of the second-stage reverse osmosis equipment is connected with the water storage tank through a first return pipeline, a second return pipeline is arranged between the concentrated water output end of the first-stage reverse osmosis equipment and the first return pipeline, and the pure water output end of the second-stage reverse osmosis equipment is connected with the first end of a V6 electric valve; and a drain pipe with a V2 electric valve is arranged at the bottom of the water storage tank. By adding chemical agents into the water storage tank and presetting disinfection and cleaning procedures through the PLC, the water storage tank, the primary reverse osmosis equipment and the secondary reverse osmosis equipment can be automatically disinfected and cleaned, the disinfection and cleaning efficiency is improved, and the labor intensity of workers is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to water treatment equipment technical field, especially a water treatment disinfection device for hemodialysis. BACKGROUND

[0002] Hemodialysis is one of the renal replacement therapy modes for patients with acute and chronic renal failure. It draws blood in the body to the outside of the body, through a dialyzer composed of countless hollow fibers, blood and electrolyte solution (dialysate) containing body concentration in the inside and outside of the hollow fiber, material exchange through diffusion / convection, removal of metabolic waste in the body, maintenance of electrolyte and acid-base balance; At the same time, too much water in the body is removed, and the whole process of purified blood return is called hemodialysis.

[0003] At present, hemodialysis machine needs to be used with hemodialysis water treatment device. The reverse osmosis equipment in the existing hemodialysis water treatment device has the risk of microbial contamination after long-term use, so it needs to be disinfected regularly. However, when disinfecting the hemodialysis water treatment device, manual operation is usually required, which has the problems of low efficiency, high labor intensity and inconvenience of chemical agent discharge after disinfection.

[0004] Therefore, a new water treatment disinfection device for hemodialysis is needed. UTILITY MODEL CONTENT

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a water treatment disinfection device for hemodialysis.

[0006] The technical scheme adopted by the utility model to solve its technical problems is: a water treatment disinfection device for hemodialysis, comprising a water storage tank, a primary reverse osmosis equipment and a secondary reverse osmosis equipment, the output end of the water storage tank is connected with the input end of the primary reverse osmosis equipment, the pure water output end of the primary reverse osmosis equipment is connected with the input end of the secondary reverse osmosis equipment, the concentrated water output end of the secondary reverse osmosis equipment is connected with the water storage tank through a first backflow pipeline, a second backflow pipeline is arranged between the concentrated water output end of the primary reverse osmosis equipment and the first backflow pipeline, the pure water output end of the secondary reverse osmosis equipment is connected with the first end of a V6 electric valve, a third backflow pipeline is arranged between the second end of the V6 electric valve and the second backflow pipeline, the third end of the V6 electric valve is connected with the water storage tank through a water outlet pipeline; The water storage tank is provided with a liquid level sensor, and the bottom of the water storage tank is provided with a drain pipe with a V2 electric valve.

[0007] As a further improvement of the utility model: the concentrated water output end of the primary reverse osmosis equipment is connected with the first end of a V5 electric valve through a second backflow pipeline, the second end of the V5 electric valve is connected with the first backflow pipeline, and the third end of the V5 electric valve is connected with the drain pipe.

[0008] As a further improvement of the utility model: the output end of the water storage tank and the input end of the secondary reverse osmosis equipment are further provided with a first branch, the first branch is provided with a V3 electric valve; the second backflow pipeline is connected with a drain pipe provided with a V4 electric valve.

[0009] As a further improvement of the utility model: the top of the water storage tank is connected with a water inlet pipeline, and the water inlet pipeline is provided with a V1 electric valve.

[0010] As a further improvement of the utility model: the primary reverse osmosis equipment comprises a primary high-pressure pump and a primary reverse osmosis membrane, the water storage tank is connected with the primary high-pressure pump, the primary high-pressure pump is connected with the input end of the primary reverse osmosis membrane, and the concentrated water output end of the primary reverse osmosis membrane is connected with the first backflow pipeline and the second backflow pipeline.

[0011] As a further improvement of the utility model: the secondary reverse osmosis equipment comprises a secondary high-pressure pump and a secondary reverse osmosis membrane, the pure water output end of the primary reverse osmosis membrane is connected with the input end of the secondary high-pressure pump, the secondary high-pressure pump is connected with the input end of the secondary reverse osmosis membrane, the concentrated water output end of the secondary reverse osmosis membrane is connected with the water storage tank through the first backflow pipeline, and the pure water output end of the secondary reverse osmosis membrane is connected with the first end of a V6 electric valve.

[0012] As a further improvement of the utility model: further comprising a PLC controller, the PLC controller is electrically connected with the raw water pump, the V1 electric valve, the V2 electric valve, the V3 electric valve, the V4 electric valve, the V5 electric valve, the V6 electric valve, the primary high-pressure pump and the secondary high-pressure pump respectively.

[0013] As a further improvement of the utility model: further comprising a raw water pump and a filtering assembly, the raw water pump and the filtering assembly are connected through a pipeline, and the filtering assembly is connected with the water storage tank through a water inlet pipeline.

[0014] Compared with the prior art, the utility model has the advantages of:

[0015] The water treatment and disinfection device for hemodialysis has the advantages that the drain pipe provided with an electric valve is convenient for discharging chemical agents after chemical cleaning and disinfection; chemical agents are added into the water storage tank during disinfection and cleaning, and the disinfection and cleaning programs are set in advance through the PLC controller, so that the water storage tank, the primary reverse osmosis equipment and the secondary reverse osmosis equipment can be automatically chemically disinfected and automatically cleaned, disinfection and cleaning efficiency is improved, and the labor intensity is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 The utility model is a connection block diagram of the overall structure.

[0017] Fig. 2 The connection block diagram of the local structure of the utility model.

[0018] Fig. 3 The operation flow chart of the chemical disinfection and cleaning mode of the utility model.

[0019] The figure mark: 1, raw water pump;2, water storage jar;3, first high pressure pump;4, first reverse osmosis membrane;5, second high pressure pump;6, second reverse osmosis membrane;7, first backflow pipeline;8, second backflow pipeline;9, third backflow pipeline;10, water outlet pipeline;11, first branch;12, second branch;13, V1 electric valve;14, V2 electric valve;15, V3 electric valve;16, V4 electric valve;17, V5 electric valve;18, V6 electric valve. Specific implementation

[0020] In this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. The present utility model is further illustrated by the following examples:

[0021] Please refer to Figs. 1-3 A water treatment and disinfection device for hemodialysis, comprising a water storage tank 2, a first reverse osmosis device and a second reverse osmosis device, the output end of the water storage tank 2 is connected with the input end of the first reverse osmosis device, the pure water output end of the first reverse osmosis device is connected with the input end of the second reverse osmosis device, the concentrated water output end of the second reverse osmosis device is connected with the water storage tank 2 through a first backflow pipeline 7, a second backflow pipeline 8 is arranged between the concentrated water output end of the first reverse osmosis device and the first backflow pipeline 7, the pure water output end of the second reverse osmosis device is connected with the first end of a V6 electric valve 18, a third backflow pipeline 9 is arranged between the second end of the V6 electric valve 18 and the second backflow pipeline 8, the third end of the V6 electric valve 18 is connected with the water storage tank 2 through a water outlet pipeline 10;The water storage tank 2 is provided with a liquid level sensor, and the bottom of the water storage tank 2 is provided with a drain pipe with a V2 electric valve 14.

[0022] Further, the concentrated water output end of the first reverse osmosis device is connected with the first end of a V5 electric valve 17 through a second backflow pipeline 8, the second end of the V5 electric valve 17 is connected with the first backflow pipeline 7, and the third end of the V5 electric valve 17 is connected with the drain pipe.

[0023] Further, a first branch 11 is arranged between the output end of the water storage tank 2 and the input end of the secondary reverse osmosis device, the first branch 11 being provided with a V3 electric valve 15; the second backflow pipeline 8 is connected with a drain pipe provided with a V4 electric valve 16.

[0024] Further, a second branch 12 is arranged between the pure water output end of the secondary reverse osmosis device and the input end of the secondary reverse osmosis device, the second branch 12 being provided with a check valve and a gate valve.

[0025] Further, the top of the water storage tank 2 is connected with a water inlet pipeline, the water inlet pipeline being provided with a V1 electric valve 13.

[0026] Specifically, the V1 electric valve 13, the V2 electric valve 14, the V3 electric valve 15 and the V4 electric valve 16 are two-way valves, and the V5 electric valve 17 and the V6 electric valve 18 are three-way valves.

[0027] Further, the water outlet pipeline is connected with a drain pipe provided with a V7 electric valve, and the first backflow pipeline 7 is connected with a drain pipe provided with a V8 electric valve.

[0028] Specifically, the primary reverse osmosis device comprises a primary high-pressure pump 3 and a primary reverse osmosis membrane 4, the water storage tank 2 is connected with the primary high-pressure pump 3, the primary high-pressure pump 3 is connected with the input end of the primary reverse osmosis membrane 4, and the concentrated water output end of the primary reverse osmosis membrane 4 is connected with the first backflow pipeline 7 through the second backflow pipeline 8.

[0029] Specifically, the secondary reverse osmosis device comprises a secondary high-pressure pump 5 and a secondary reverse osmosis membrane 6, the pure water output end of the primary reverse osmosis membrane 4 is connected with the input end of the secondary high-pressure pump 5, the secondary high-pressure pump 5 is connected with the input end of the secondary reverse osmosis membrane 6, the concentrated water output end of the secondary reverse osmosis membrane 6 is connected with the water storage tank 2 through the first backflow pipeline 7, and the pure water output end of the secondary reverse osmosis membrane 6 is connected with the first end of the V6 electric valve 18.

[0030] Further, a check valve is arranged between the primary high-pressure pump 3 and the primary reverse osmosis membrane 4, a check valve is arranged between the primary reverse osmosis membrane 4 and the secondary high-pressure pump 5, a check valve is arranged between the secondary high-pressure pump 5 and the secondary reverse osmosis membrane 6, a check valve is arranged in the pipeline between the secondary reverse osmosis membrane 6 and the V6 electric valve 18, and a check valve is arranged in the second backflow pipeline 8.

[0031] Further, a pressure gauge is arranged between the primary high-pressure pump 3 and the primary reverse osmosis membrane 4, a pressure gauge is arranged between the primary reverse osmosis membrane 4 and the secondary high-pressure pump 5, a pressure gauge is arranged between the secondary high-pressure pump 5 and the secondary reverse osmosis membrane 6, a pressure gauge is arranged in the water outlet pipeline 10, and a pressure gauge is arranged in the second backflow pipeline 8.

[0032] Further, the conductivity sensor and low pressure protection switch are arranged between the primary reverse osmosis membrane 4 and the secondary high pressure pump 5, and the conductivity sensor is arranged in the pipeline between the secondary reverse osmosis membrane 6 and the V6 electric valve 18.

[0033] Further, the raw water pump 1 and the filtering assembly are further included, the raw water pump 1 is connected with the filtering assembly through the pipeline, and the filtering assembly is connected with the water storage tank 2 through the water inlet pipeline.

[0034] In operation, the raw water pump 1 is started, the municipal tap water from outside enters the filtering assembly for filtering, and then the water flow enters the water storage tank 2, and then the water quality is purified through the reverse osmosis assembly, the small pollutants and dissolved ions in the water are removed, the water reaches a certain purity requirement, and then the water is provided to the hemodialysis machine through the water outlet pipeline.

[0035] Further, the PLC controller is further included, and the PLC controller is electrically connected with the raw water pump 1, the V1 electric valve 13, the V2 electric valve 14, the V3 electric valve 15, the V4 electric valve 16, the V5 electric valve 17, the V6 electric valve 18, the primary high pressure pump 3 and the secondary high pressure pump 5 respectively. The liquid level sensor is electrically connected with the PLC controller.

[0036] When disinfection is needed, the disinfection and cleaning program is set in advance through the PLC controller, and automatic chemical disinfection and automatic cleaning are realized on the water storage tank, the primary reverse osmosis equipment, the secondary reverse osmosis equipment and the pipeline. Fig. 3 As shown in the figure, the operation process of the chemical disinfection and cleaning mode includes the following programs:

[0037] 1) Program 1: main machine cycle disinfection

[0038] The configured chemical agent is placed in the water storage tank, the raw water pump, the V1 electric valve, the V2 electric valve, the V3 electric valve and the V4 electric valve are closed, the primary high pressure pump and the secondary high pressure pump, the V5 electric valve and the V6 electric valve are opened, the first end and the second end of the V5 electric valve are controlled to be communicated, the first end and the second end of the V6 electric valve are controlled to be communicated, the disinfectant liquid containing the agent continuously flows out from the water storage tank, flows through the primary reverse osmosis equipment and the secondary reverse osmosis equipment, and then flows back to the water storage tank through the third backflow pipeline, the first backflow pipeline and the second backflow pipeline, so as to realize the cycle disinfection of the main machine; the running time of the program 1 can be set to 5 minutes, and the running time can also be adjusted according to actual needs.

[0039] 2) Program 2: pipeline cycle disinfection

[0040] Close the first high-pressure pump and V5 electric valve, open V3 electric valve, control the first end and the third end of V6 electric valve to communicate, disinfectant continuously flows out from the water storage tank, and flows through the first branch, the second reverse osmosis equipment, then flows back to the water storage tank through the first backflow pipeline and the water outlet pipeline, to realize pipeline circulation disinfection; the program 2 running time can be set to 10 minutes, and the running time can also be adjusted according to actual needs.

[0041] 3) Program 3: static soaking disinfection

[0042] Close the second high-pressure pump, V3 electric valve and V6 electric valve to realize static soaking disinfection; the program 3 running time can be set to 30 minutes, and the running time can also be adjusted according to actual needs.

[0043] 4) Program 4: discharge disinfectant

[0044] Open V2 electric valve to make disinfectant discharge from the drain pipe at the bottom of the water storage tank; the program 4 running time can be set to 10 minutes, and the running time can also be adjusted according to actual needs.

[0045] 5) Program 5: system flushing 1

[0046] Open the raw water pump, the first high-pressure pump, the second high-pressure pump, V1 electric valve, V5 electric valve and V6 electric valve, control the first end and the third end of V5 electric valve to communicate, control the first end and the third end of V6 electric valve to communicate, the municipal tap water in the outside world enters the filter assembly for filtration after entering the water storage tank, then part of it is discharged through the first backflow pipeline, V8 electric valve and drain pipe, part of it is discharged through the second backflow pipeline, V5 electric valve and drain pipe, and part of it is discharged through the water outlet pipeline, V7 electric valve and drain pipe; the program 5 running time can be set to 120 minutes, and the running time can also be adjusted according to actual needs.

[0047] 6) Program 6: first flushing 1

[0048] Close the second high-pressure pump, open V3 electric valve and V4 electric valve, the water in the water storage tank flows into the first reverse osmosis equipment, part of it flows into the first branch after flowing into the pure water output end of the first reverse osmosis equipment, and then flows back to the input end of the first reverse osmosis equipment, and the other part flows into the second backflow pipeline and V4 electric valve through the concentrated water output end of the first reverse osmosis equipment, and then is discharged through the drain pipe; the program 6 running time can be set to 15 minutes, and the running time can also be adjusted according to actual needs.

[0049] 7) Program 7: first flushing 2

[0050] Close V4 electric valve, the water in the water storage tank flows into the first reverse osmosis equipment, part of which flows into the first branch and then flows back to the input end of the first reverse osmosis equipment through the pure water output end of the first reverse osmosis equipment, and the other part flows into the second backflow pipeline and V5 electric valve and then is discharged through the drain pipe; the running time of program 7 can be set to 30 minutes, and the running time can also be adjusted according to actual needs.

[0051] 8) Program 8: Double-pole internal circulation flushing

[0052] Close V3 electric valve, open second high-pressure pump, control V6 electric valve to communicate the first end and the second end, the water in the water storage tank flows through the first reverse osmosis equipment and the second reverse osmosis equipment, part of which flows through the second backflow pipeline and then is discharged through V5 electric valve and drain pipe, and part of which flows through the third backflow pipeline and the first backflow pipeline and then is discharged through V8 electric valve and drain pipe; the running time of program 8 can be set to 30 minutes, and the running time can also be adjusted according to actual needs.

[0053] 9) Program 9: System flushing 2

[0054] Control V6 electric valve to communicate the first end and the third end, the water in the water storage tank flows through the first reverse osmosis equipment and the second reverse osmosis equipment, part of which flows through the second backflow pipeline and then is discharged through V5 electric valve and drain pipe, part of which flows through the first backflow pipeline and then is discharged through V8 electric valve and drain pipe, and part of which flows through the water outlet pipeline and then is discharged through V7 electric valve and drain pipe; the running time of program 9 can be set to 120-180 minutes, and the running time can also be adjusted according to actual needs.

[0055] It should be noted that the disinfection and cleaning program must be operated in sequence, starting from program 1 to program 9 (prohibition of cross-program operation), each program needs to be operated and run for a specified time, and the time reaches the next program immediately after the operation continues to run, until the last program 9 runs out of time, the test terminal disinfection residue is detected, and the residue is not qualified. Continue program 9 until the disinfection residue detection is qualified (qualified, then the whole disinfection and cleaning program is completed), and the operation system is turned to standby state. When the next time needs to be put into operation, the system can be started.

[0056] The main function of the utility model is:

[0057] The water treatment and disinfection device for hemodialysis of the utility model, by setting the drain pipe containing the electric valve, it is convenient to discharge chemical reagent after chemical cleaning and disinfection; when disinfecting and cleaning, chemical reagent is added into the water storage tank, and disinfection and cleaning programs are set in advance through the PLC controller, so that automatic chemical disinfection and automatic cleaning of the water storage tank, the first reverse osmosis equipment and the second reverse osmosis equipment can be realized, disinfection and cleaning efficiency is improved, and labor intensity is reduced.

[0058] In the description of the utility model, it needs to understand that the orientation or position relation indicated by the terms "upper end surface", "lower end surface", "top", "bottom", "left", "right" and the like is the orientation or position relation based on the drawings shown, and is only for the convenience of the description of the utility model, thus cannot be understood as the limitation on the actual use direction of the utility model.

[0059] The above examples are only used to illustrate the technical solutions of the utility model, rather than limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it still can modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the range of the technical solutions of the utility model examples, and they should all be covered in the range of the claims and the description of the utility model.

Claims

1. A water treatment and disinfecting apparatus for hemodialysis, characterized by: The application relates to a water storage tank, a first reverse osmosis device and a second reverse osmosis device, wherein the output end of the water storage tank is connected with the input end of the first reverse osmosis device, the pure water output end of the first reverse osmosis device is connected with the input end of the second reverse osmosis device, the concentrated water output end of the second reverse osmosis device is connected with the water storage tank through a first backflow pipeline, a second backflow pipeline is arranged between the concentrated water output end of the first reverse osmosis device and the first backflow pipeline, the pure water output end of the second reverse osmosis device is connected with the first end of a V6 electric valve, a third backflow pipeline is arranged between the second end of the V6 electric valve and the second backflow pipeline, and the third end of the V6 electric valve is connected with the water storage tank through a water outlet pipeline; the water storage tank is provided with a liquid level sensor, and the bottom of the water storage tank is provided with a drain pipe with a V2 electric valve.

2. The water treatment and disinfecting device for hemodialysis according to claim 1, characterized in that: The concentrated water output end of the first reverse osmosis device is connected with the first end of a V5 electric valve through a second backflow pipeline, the second end of the V5 electric valve is connected with the first backflow pipeline, and the third end of the V5 electric valve is connected with a drain pipe.

3. The water treatment and disinfecting device for hemodialysis according to claim 2, characterized in that: A first branch is further arranged between the output end of the water storage tank and the input end of the second reverse osmosis device, and the first branch is provided with a V3 electric valve; and the second backflow pipeline is connected with a drain pipe with a V4 electric valve.

4. The water treatment and disinfecting device for hemodialysis according to claim 3, characterized in that: The top of the water storage tank is connected with a water inlet pipeline, and the water inlet pipeline is provided with a V1 electric valve.

5. The water treatment and disinfecting device for hemodialysis according to claim 4, characterized in that: The first reverse osmosis device comprises a first high-pressure pump and a first reverse osmosis membrane, the water storage tank is connected with the first high-pressure pump, the first high-pressure pump is connected with the input end of the first reverse osmosis membrane, and the concentrated water output end of the first reverse osmosis membrane is connected with the first backflow pipeline through the second backflow pipeline.

6. The water treatment and disinfecting device for hemodialysis according to claim 5, characterized in that: The second reverse osmosis device comprises a second high-pressure pump and a second reverse osmosis membrane, the pure water output end of the first reverse osmosis membrane is connected with the input end of the second high-pressure pump, the second high-pressure pump is connected with the input end of the second reverse osmosis membrane, the concentrated water output end of the second reverse osmosis membrane is connected with the water storage tank through the first backflow pipeline, and the pure water output end of the second reverse osmosis membrane is connected with the first end of the V6 electric valve.

7. The water treatment and disinfecting device for hemodialysis according to claim 4, characterized in that: A PLC controller is further arranged and electrically connected with the raw water pump, the V1 electric valve, the V2 electric valve, the V3 electric valve, the V4 electric valve, the V5 electric valve, the V6 electric valve, the first high-pressure pump and the second high-pressure pump respectively, and the liquid level sensor is electrically connected with the PLC controller.

8. The water treatment and disinfecting device for hemodialysis according to claim 4, characterized in that: A raw water pump and a filtering assembly are further arranged, the raw water pump is connected with the filtering assembly through a pipeline, and the filtering assembly is connected with the water storage tank through a water inlet pipeline.

Images