Reverse osmosis water production equipment for hemodialysis

Abstract

The utility model discloses reverse osmosis water production equipment for hemodialysis, which comprises a balanced reservoir, a first-stage reverse osmosis membrane and a second-stage reverse osmosis membrane, a raw water inlet of the balanced reservoir is connected with a precision filter, the bottom of the balanced reservoir is connected with the first-stage reverse osmosis membrane through a first-stage water supply pipe, a first-stage high-pressure pump is arranged on the first-stage water supply pipe, and a second-stage high-pressure pump is arranged on the second-stage water supply pipe. The bottom of the balanced water tank is connected with a second-stage reverse osmosis membrane through a second-stage water supply pipe, a second-stage water inlet valve and a second-stage high-pressure pump are arranged on the second-stage water supply pipe, a pure water outlet of the first-stage reverse osmosis membrane is connected with the second-stage high-pressure pump, and concentrated water outlets of the first-stage reverse osmosis membrane and the second-stage reverse osmosis membrane are respectively connected with the balanced water tank. According to the utility model, the pure water prepared by the two-stage reverse osmosis membrane is purer, and the concentrated water flowing out of the concentrated water outlet of the two-stage reverse osmosis membrane can be recycled, so that the cyclic utilization rate of the concentrated water is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water equipment technical field, especially a reverse osmosis water equipment for hemodialysis. BACKGROUND

[0002] The high-purity water used in the hemodialysis process directly affects the effect of dialysis and the safety of patients. The water for dialysis usually needs to be treated by a water treatment system in multiple stages, including primary filtration, reverse osmosis (RO), ultraviolet disinfection, and ultrafiltration, to remove impurities, microorganisms, and endotoxins in the water, so as to ensure the purity of the dialysate.

[0003] Currently, the hemodialysis water system generally uses single-stage filtration, and the water quality after filtration does not meet the standards. In addition, the system has low utilization rate of concentrated water generated after filtration. SUMMARY

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a reverse osmosis water equipment for hemodialysis, which solves the problem of low utilization rate of concentrated water after filtration in the existing hemodialysis water system.

[0005] The technical scheme adopted by the utility model to solve its technical problems is: a reverse osmosis water equipment for hemodialysis, comprising a balance water tank, a first reverse osmosis membrane, and a second reverse osmosis membrane. The raw water inlet of the balance water tank is connected to a precision filter. The bottom of the balance water tank is connected to the first reverse osmosis membrane through a first water supply pipe. A first high-pressure pump is provided on the first water supply pipe. The bottom of the balance water tank is connected to the second reverse osmosis membrane through a second water supply pipe. A second water inlet valve and a second high-pressure pump are provided on the second water supply pipe. The pure water outlet of the first reverse osmosis membrane is connected to the second high-pressure pump. The concentrated water outlets of the first reverse osmosis membrane and the second reverse osmosis membrane are respectively connected to the balance water tank.

[0006] As a further improvement of the utility model: it further comprises a pretreatment unit, which comprises a sand filter, an activated carbon filter, and a water softener connected in sequence. The water softener is connected to the precision filter. A first water inlet valve is provided between the precision filter and the balance water tank.

[0007] As a further improvement of the utility model: a water supply main pipe is connected between the pure water outlet of the second reverse osmosis membrane and the first water inlet end of the balance water tank. A water supply valve is installed on the water supply main pipe. The water supply main pipe is connected to a dialysis water unit.

[0008] As a further improvement of the utility model: a double-stage circulation pipe is connected to the water supply main pipe. One end of the double-stage circulation pipe is connected to the water supply valve, and the other end of the double-stage circulation pipe is connected to the second water inlet end of the balance water tank.

[0009] The concentrated water outlet of the first reverse osmosis membrane is connected with the second water inlet end of the balance water tank through a first circulating pipe, and a first drain valve and a flow meter are installed on the first circulating pipe.

[0010] The concentrated water outlet of the second reverse osmosis membrane is provided with a second circulating pipe between the second water inlet end of the balance water tank, and a check valve and a flow meter are installed on the second circulating pipe.

[0011] The first circulating pipe is connected with a drain branch pipe, a second drain valve is installed on the drain branch pipe, and a flow meter is arranged between the first drain valve and the second drain valve.

[0012] The bottom of the balance water tank is connected with a drain pipe, and a drain valve is installed on the drain pipe.

[0013] The pure water outlet of the first reverse osmosis membrane is provided with a three-way valve between the second high-pressure pump, and a check valve is arranged between the third end of the three-way valve and the water supply valve.

[0014] The pure water outlet of the first reverse osmosis membrane is provided with a check valve and a flow meter between the three-way valve.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model discloses a precise filter is established to the front end of balance water tank, improves the raw water purity that stores in balance water tank, and the water in balance water tank is further handled with the first reverse osmosis membrane and the second reverse osmosis membrane, and the pure water quality prepared is better, is applicable to hemodialysis, and the concentrated water of the first reverse osmosis membrane and the second reverse osmosis membrane is returned to balance water tank, realizes the recycling of concentrated water. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure schematic drawing of the embodiment one hemodialysis reverse osmosis water equipment.

[0018] Figure 2 It is the schematic diagram of the embodiment one hemodialysis reverse osmosis water equipment.

[0019] Figure 3 It is the operation schematic diagram of the disinfection mode of the embodiment one hemodialysis reverse osmosis water equipment.

[0020] REFERENCE SIGNS:

[0021] 1, pretreatment unit, 11, sand filter, 12, activated carbon filter, 13, water softener, 2, precision filter, 3, balance water tank, 4, primary reverse osmosis membrane, 5, secondary reverse osmosis membrane,

[0022] 501, first water inlet valve, 502, emptying valve, 503, secondary water inlet valve, 504, second drain valve, 505, first drain valve, 506, water supply valve, 507, flow meter, 508, check valve, 509, three-way valve,

[0023] 601, primary water supply pipe, 602, secondary water supply pipe, 603, pure water branch pipe, 604, water supply main pipe, 605, double-stage circulation pipe, 606, primary circulation pipe, 607, drain branch pipe, 608, secondary circulation pipe, 609, drain pipe,

[0024] 701, primary high-pressure pump, 702, secondary high-pressure pump, 703, raw water pump,

[0025] 8, dialysis water unit. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will combine the utility model specific embodiment and corresponding drawings to make the utility model technical scheme clear, complete description. Obviously, the described embodiment is only a part of the utility model embodiment, not all embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of the utility model protection.

[0027] In order to solve the technical problem in the prior art, the utility model is further illustrated as follows in combination with drawings and embodiments:

[0028] As Figures 1 to 2The utility model discloses a kind of reverse osmosis water preparation equipment for hemodialysis, including pretreatment unit 1, precision filter 2, balance water tank 3, primary reverse osmosis membrane 4 and secondary reverse osmosis membrane 5, pretreatment unit 1, precision filter 2, balance water tank 3 are sequentially connected by pipeline, first water inlet valve 501 is equipped between precision filter 2 and balance water tank 3, the bottom of balance water tank 3 is connected with primary water supply pipe 601 and secondary water supply pipe 602, primary high pressure pump 701 is equipped on primary water supply pipe 601, primary water supply pipe 601 is used to supply water for primary reverse osmosis membrane 4, secondary water inlet valve 503 and secondary high pressure pump 702 are equipped on secondary water supply pipe 602, secondary water supply pipe 602 is used to supply water for secondary reverse osmosis membrane 5, the pure water outlet of primary reverse osmosis membrane 4 is connected with secondary high pressure pump 702 by pure water branch pipe 603, is pressurized by secondary high pressure pump 702, the pure water of primary reverse osmosis flows into secondary reverse osmosis membrane 5, the concentrated water outlet of primary reverse osmosis membrane 4 and secondary reverse osmosis membrane 5 is connected with balance water tank 3 respectively, dialysis water unit 8 is connected between the pure water outlet of secondary reverse osmosis membrane 5 and balance water tank 3, and water unit is used to supply water for clinical dialysis.

[0029] Pretreatment unit 1, precision filter 2 are arranged at the front end of balance water tank 3, improve the purity of raw water stored in balance water tank 3, the water in balance water tank 3 is further processed using primary reverse osmosis membrane 4 and secondary reverse osmosis membrane 5, and the prepared pure water has better quality and is suitable for hemodialysis.

[0030] The pretreatment unit 1 includes sand filter 11, activated carbon filter 12 and water softener 13, and the sand filter 11, activated carbon filter 12 and water softener 13 are sequentially connected by pipelines.

[0031] The sand filter 11 removes larger particulate impurities, the activated carbon filter 12 adsorbs organic matter and residual chlorine, and the water softener 13 removes calcium and magnesium ions in water to reduce water hardness.

[0032] The precision filter 2 is used for removing micro-particles in liquid or gas, and its filtering precision is usually in micrometer or even nanometer level, which can effectively remove bacteria, viruses, colloids and other impurities, and is widely used in medicine, electronics, food and other industries.

[0033] The water treated by the pretreatment unit 1 enters the precision filter 2 for more subtle filtration to remove bacteria, viruses and other tiny particles. Finally, the precision-filtered water enters the balance water tank 3 for storage and supply of high-quality pure water, ensuring water quality stability and safety, suitable for hemodialysis and other scenarios with extremely high water quality requirements.

[0034] In some embodiments, a water supply main pipe 604 is connected between the pure water outlet of the secondary reverse osmosis membrane 5 and the first water inlet end of the balance water tank 3, and a water supply valve 506 is installed on the water supply main pipe 604. The water supply main pipe 604 is connected to the dialysis water unit 8.

[0035] Further, a double-stage circulation pipe 605 is connected to the water supply main pipe 604, one end of the double-stage circulation pipe 605 is connected to the water supply valve 506, and the other end of the double-stage circulation pipe 605 is connected to the second water inlet end of the balance water tank 3.

[0036] In some embodiments, a primary circulation pipe 606 is connected between the concentrated water outlet of the primary reverse osmosis membrane 4 and the second water inlet end of the balance water tank 3, and a first drain valve 505 and a flow meter 507 are installed on the primary circulation pipe 606. The concentrated water of the primary reverse osmosis membrane 4 is returned to the balance water tank 3 through the primary circulation pipe 606 to realize the recycling of the primary concentrated water.

[0037] Further, a drain branch pipe 607 is connected to the primary circulation pipe 606, a second drain valve 504 is installed on the drain branch pipe 607, and a flow meter 507 is arranged between the first drain valve 505 and the second drain valve 504.

[0038] In some embodiments, a secondary circulation pipe 608 is arranged between the concentrated water outlet of the secondary reverse osmosis membrane 5 and the second water inlet end of the balance water tank 3, and a check valve 508 and a flow meter 507 are installed on the secondary circulation pipe 608. The concentrated water of the secondary reverse osmosis membrane 5 is returned to the balance water tank 3 through the secondary circulation pipe 608 to realize the recycling of the secondary concentrated water.

[0039] The concentrated water of the primary reverse osmosis membrane 4, the concentrated water of the secondary reverse osmosis membrane 5, the flushing water of the primary reverse osmosis membrane 4, and the flushing water of the secondary reverse osmosis membrane 5 are jointly introduced into the balance water tank 3 through the primary circulation pipe 606, the secondary circulation pipe 608, and the double-stage circulation pipe 605.

[0040] A three-way valve 509 is installed between the pure water outlet of the primary reverse osmosis membrane 4 and the secondary high-pressure pump 702, and a check valve 508 is arranged between the third end of the three-way valve 509 and the water supply valve 506.

[0041] In some embodiments, a drain pipe 609 is connected to the bottom of the balance water tank 3, and a drain valve 502 is installed on the drain pipe 609.

[0042] The pure water outlet of the primary reverse osmosis membrane 4 is connected with the three-way valve 509 through a check valve 508 and a flow meter 507.

[0043] The water inlet pipe of the pretreatment unit 1 is provided with a raw water pump 703 and a flow sensor.

[0044] The water supply main pipe 604 is further provided with a constant pressure valve between the water supply main pipe 604 and the balance water tank 3.

[0045] Figure 3 In the embodiment, the first water inlet valve 501 is a V1 electric valve, the emptying valve 502 is a V2 electric valve, the second water inlet valve 503 is a V3 electric valve, the second water outlet valve 504 is a V4 electric valve, the first water outlet valve 505 is a V5 electric valve, and the water supply valve 506 is a V6 electric valve. Figure 3 The operation of each electric valve is shown in detail in the following table.

[0046] The sub-programs of the disinfection program of the reverse osmosis water production device for hemodialysis include: main machine disinfection internal circulation, water supply pipe circulation, disinfectant static soaking, disinfectant discharge, main machine two-stage flushing program 1, main machine one-stage flushing program 1, main machine internal circulation one-stage flushing program 2, main machine two-stage internal circulation flushing, and main machine two-stage mode system flushing 2.

[0047] The nine sub-programs are sequentially operated, and the operation time of each sub-program can be adjusted.

[0048] According to the technical scheme and technical concept of the present application, those skilled in the art can make various corresponding transformation schemes without creative mental labor after reading the present application file, and all the transformation schemes belong to the protection scope of the present application.

Claims

1. A reverse osmosis water preparation apparatus for hemodialysis, characterized by comprising: The application relates to a water treatment device, which comprises a balance water tank, a first reverse osmosis membrane and a second reverse osmosis membrane, wherein the raw water inlet of the balance water tank is connected with a precision filter, the bottom of the balance water tank is connected with the first reverse osmosis membrane through a first water supply pipe, the first water supply pipe is provided with a first high-pressure pump, the bottom of the balance water tank is connected with the second reverse osmosis membrane through a second water supply pipe, the second water supply pipe is provided with a second water inlet valve and a second high-pressure pump, the pure water outlet of the first reverse osmosis membrane is connected with the second high-pressure pump, and the concentrated water outlets of the first reverse osmosis membrane and the second reverse osmosis membrane are respectively connected with the balance water tank.

2. The reverse osmosis water treatment apparatus for hemodialysis according to claim 1, wherein The water treatment device further comprises a pretreatment unit, wherein the pretreatment unit comprises a sand filter, an activated carbon filter and a water softener which are connected in sequence, the water softener is connected with the precision filter, and a first water inlet valve is arranged between the precision filter and the balance water tank.

3. The reverse osmosis water treatment apparatus for hemodialysis according to claim 1 or 2, characterized by The pure water outlet of the second reverse osmosis membrane is connected with the first water inlet end of the balance water tank through a water supply main pipe, the water supply main pipe is provided with a water supply valve, and the water supply main pipe is connected with a dialysis water unit.

4. The reverse osmosis water treatment apparatus for hemodialysis according to claim 3, wherein The water supply main pipe is connected with a double-stage circulation pipe, one end of the double-stage circulation pipe is connected with the water supply valve, and the other end of the double-stage circulation pipe is connected with the second water inlet end of the balance water tank.

5. The reverse osmosis water treatment apparatus for hemodialysis according to claim 4, wherein The concentrated water outlet of the first reverse osmosis membrane is connected with the second water inlet end of the balance water tank through a first circulation pipe, and the first circulation pipe is provided with a first drainage valve and a flowmeter.

6. The reverse osmosis water treatment apparatus for hemodialysis according to claim 4, wherein The concentrated water outlet of the second reverse osmosis membrane is connected with the second water inlet end of the balance water tank through a second circulation pipe, and the second circulation pipe is provided with a check valve and a flowmeter.

7. The reverse osmosis water treatment apparatus for hemodialysis according to claim 5, wherein The first circulation pipe is connected with a drainage branch pipe, the drainage branch pipe is provided with a second drainage valve, and a flowmeter is arranged between the first drainage valve and the second drainage valve.

8. The reverse osmosis water treatment apparatus for hemodialysis according to claim 1, wherein The bottom of the balance water tank is connected with a discharge pipe, and the discharge pipe is provided with an emptying valve.

9. The reverse osmosis water treatment apparatus for hemodialysis according to claim 3, wherein A three-way valve is arranged between the pure water outlet of the first reverse osmosis membrane and the second high-pressure pump, a check valve is arranged between the third end of the three-way valve and the water supply valve.

10. The reverse osmosis water treatment apparatus for hemodialysis according to claim 9, wherein A check valve and a flowmeter are arranged between the pure water outlet of the first reverse osmosis membrane and the three-way valve.

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