Medical water treatment system with valves connected in parallel
By controlling the water flow through a parallel valve system, the water hammer phenomenon caused by the frequent start-stop of pilot-operated solenoid valves was resolved, improving the stability of the medical water treatment system, extending the service life of the valves, and reducing maintenance costs.
Patent Information
- Application Number
- CN202520070010.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-13
AI Technical Summary
During peak water usage periods in hospitals, the frequent start-stop of pilot-operated solenoid valves can cause water hammer, which can easily damage the valves and affect the stability of the medical water supply system.
A parallel valve system is adopted, including a water storage tank, an inlet water assembly, a reverse osmosis water treatment equipment, a pure water pipeline, and an overflow assembly. By controlling the opening and closing of the first and second valves, the number of valve opening and closing times is reduced, the water flow rate and pressure are stabilized, and the impact of water hammer is reduced.
It improves the operational stability of medical water treatment systems, reduces valve damage, lowers maintenance frequency and costs, and enables flexible water volume adjustment.
Smart Images
Figure CN223823420U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical technology, and in particular to a medical water treatment system with parallel valves. Background Technology
[0002] Typically, large hospitals are equipped with medical water supply systems that provide water sources that meet the water quality requirements of various departments.
[0003] The water supply pipeline of a medical water supply system is connected in series with a pilot-operated solenoid valve and a storage tank. The pump motor of a medical water supply system is usually quite powerful, and the opening of the pilot-operated solenoid valve can meet the disinfection and rinsing requirements of the medical water supply system.
[0004] However, during peak water usage periods in hospitals, the storage tanks need constant replenishment, causing the pilot-operated solenoid valve to start and stop every half minute. When the fluid in the pipeline suddenly stops flowing, the fluid pressure rises instantaneously. Under the action of a high-powered pump, the water flow velocity in the pipeline changes drastically and the pressure fluctuates significantly, easily causing vibration in the pipeline system and resulting in water hammer. Affected by water hammer, the pilot-operated solenoid valve is easily damaged by repeated impacts, and it will fail every six months to a year, requiring frequent maintenance and replacement. Utility Model Content
[0005] The purpose of this utility model embodiment is to provide a medical water treatment system with parallel valves to improve the operational stability of the medical water treatment system with parallel valves. The specific technical solution is as follows:
[0006] This application provides a medical water treatment system with parallel valves, comprising: a water storage tank having an inlet and an outlet; an inlet assembly including an inlet pipe, a first valve, and a second valve, wherein the inlet pipe is connected to the inlet, and the first valve and the second valve are connected in parallel to the inlet pipe; a reverse osmosis water treatment device, wherein the inlet of the reverse osmosis water treatment device is connected to the outlet of the water storage tank; a pure water pipe, wherein a first interface at a first end of the pure water pipe is connected to the outlet of the reverse osmosis water treatment device, and a second interface at a second end of the pure water pipe is connected to the water storage tank, and the pure water pipe is also provided with an external liquid supply port; and an overflow assembly connected to the water storage tank for discharging liquid in the water storage tank that is above a predetermined height.
[0007] In some embodiments, the medical water treatment system with parallel valves further includes: a valve controller; the second valve is an electrically controlled valve; the valve controller and the second valve are electrically connected for remotely controlling the opening and closing of the second valve.
[0008] In some embodiments, the first valve is an electrically controlled valve, and the valve controller is electrically connected to the first valve for remotely controlling the opening and closing of the first valve; or, the first valve is a manually operated valve.
[0009] In some embodiments, the electrically controlled valve is an electric ball valve.
[0010] In some embodiments, the inner diameter of the first valve is D1, the inner diameter of the second valve is D2, and 1 < D1 / D2 ≤ 5.
[0011] In some embodiments, the overflow assembly includes an overflow pipe and a drain pipe; one end of the overflow pipe is connected to the top of the water storage tank, and the other end of the overflow pipe is connected to the drain pipe.
[0012] In some embodiments, the system further includes a drain valve disposed at the bottom of the water tank for draining liquid from the water tank.
[0013] In some embodiments, the reverse osmosis water treatment equipment includes a circulating water pump and a reverse osmosis processor, wherein the circulating water pump is used to draw water from the water storage tank to the reverse osmosis processor.
[0014] In some embodiments, the reverse osmosis water treatment equipment further includes a return water pipeline and a third valve; the return water pipeline connects the return water inlet of the reverse osmosis processor and the water storage tank; the third valve is disposed on the return water pipeline.
[0015] In some embodiments, the medical water treatment system with parallel valves further includes: a water softening device, the outlet of which is connected to the inlet pipe for providing softened water to the inlet pipe.
[0016] In some embodiments, the volume of the water storage tank is M, where 80L≤M≤120L; the maximum water inflow rate of the water inlet pipe is Q, where 60L / min≤Q≤100L / min.
[0017] The medical water treatment system with parallel valves provided in this embodiment includes: a water storage tank, an inlet assembly, a reverse osmosis water treatment device, a pure water pipeline, and an overflow assembly. The water storage tank has an inlet and an outlet; the inlet assembly includes an inlet pipeline, a first valve, and a second valve, the inlet pipeline being connected to the inlet, and the first and second valves being connected in parallel to the inlet pipeline; the inlet of the reverse osmosis water treatment device is connected to the outlet of the water storage tank; a first interface at the first end of the pure water pipeline is connected to the outlet of the reverse osmosis water treatment device, and a second interface at the second end of the pure water pipeline is connected to the water storage tank; the pure water pipeline also has an external liquid supply port; the overflow assembly is connected to the water storage tank and is used to discharge liquid in the water storage tank that is above a predetermined height. In this embodiment, the first valve can be a normally open valve. In the disinfection and rinsing process of the water storage tank, reverse osmosis water treatment equipment, pure water pipeline, and overflow component in a medical water treatment system with parallel valves, when the water supply is large, the first and second valves can be opened simultaneously to provide a large volume of water to meet the disinfection and rinsing requirements. When the water supply of the medical water treatment system with parallel valves is small, the second valve can be closed and the first valve opened alone to provide a smaller volume of water. By controlling the opening and closing of the second valve, different water supply requirements can be met. The embodiments of this application significantly reduce the number of valve opening and closing operations, reduce fluctuations in water flow velocity and pressure within the pipeline, reduce the impact of water hammer, and minimize damage to the first and second valves, thereby improving the operational stability of the medical water treatment system with parallel valves.
[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0020] Figure 1 This is a schematic diagram of a medical water treatment system with parallel valves provided in an embodiment of this application.
[0021] The attached figures are labeled as follows:
[0022] Water storage tank 10, water inlet 11, water outlet 12, water return outlet 13, water inlet assembly 20, water inlet pipe 21, first valve 22, second valve 23, reverse osmosis water treatment equipment 30, circulating water pump 31, reverse osmosis processor 32, water return pipe 33, third valve 34, pure water pipe 40, liquid supply port 41, bed 42, overflow assembly 50, overflow pipe 51, drain pipe 52, discharge valve 53. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art based on this application are within the protection scope of the present utility model.
[0024] In related technologies, dialysis water treatment systems are equipped with circulating water storage tanks, have high-power pumping motors, and require frequent start-stop of pilot-operated solenoid valves. Furthermore, water hammer is prone to occur, and the pilot-operated solenoid valves are easily damaged.
[0025] The purpose of this application is to provide a medical water treatment system with parallel valves that have high operational stability.
[0026] Specifically, a medical water treatment system with parallel valves according to an embodiment of this application is described below with reference to the accompanying drawings.
[0027] Figure 1 A schematic diagram of a medical water treatment system with parallel valves provided in this application embodiment is shown below. Figure 1 As shown, a medical water treatment system with parallel valves includes: a water storage tank 10, an inlet water assembly 20, a reverse osmosis water treatment device 30, a pure water pipeline 40, and an overflow assembly 50.
[0028] The water storage tank 10 has an inlet 11 and an outlet 12; the water inlet assembly 20 includes an inlet pipe 21, a first valve 22 and a second valve 23, the inlet pipe 21 is connected to the inlet 11, and the first valve 22 and the second valve 23 are connected in parallel to the inlet pipe 21; the inlet of the reverse osmosis water treatment equipment 30 is connected to the outlet 12 of the water storage tank 10; the first interface of the first end of the pure water pipe 40 is connected to the outlet of the reverse osmosis water treatment equipment 30, and the second interface of the second end of the pure water pipe 40 is connected to the water storage tank 10, and the pure water pipe 40 is also provided with an external liquid supply port 41; the overflow assembly 50 is connected to the water storage tank 10 and is used to discharge liquid in the water storage tank 10 that is higher than a predetermined height.
[0029] In embodiments of this application, either the first valve 22 or the second valve 23 can be a normally open valve. During the disinfection and rinsing process of the water storage tank 10, reverse osmosis water treatment equipment 30, pure water pipeline 40, and overflow assembly 50 in the parallel valve medical water treatment system, when the water supply is large, the first valve 22 and the second valve 23 can be opened simultaneously to provide a larger volume of water to meet the disinfection and rinsing requirements. When the water supply of the parallel valve medical water treatment system is small, the second valve 23 can be closed, and the first valve 22 can be opened alone to provide a smaller volume of water. By controlling the opening and closing of the second valve 23, different water supply requirements can be met. Embodiments of this application significantly reduce the number of valve opening and closing cycles, reduce fluctuations in water flow velocity and pressure within the pipeline, mitigate the impact of water hammer, and prevent damage to the first valve 22 and the second valve 23, thus improving the operational stability of the parallel valve medical water treatment system.
[0030] There can be multiple supply ports 41, and each supply port 41 provides pure water for dialysis to one bed 42.
[0031] The water storage tank 10 has a return water inlet 13. The second interface of the second end of the pure water pipeline 40 is connected to the return water inlet 13 of the water storage tank 10. Excess pure water from the pure water pipeline 40 returns to the water storage tank 10 through the return water inlet 13. The height of the return water inlet 13 of the water storage tank 10 is higher than the height of the outlet 12 of the water storage tank 10.
[0032] To facilitate the control of the second valve 23, the parallel valve medical water treatment system also includes a valve controller; the second valve 23 is an electrically controlled valve; the valve controller and the second valve 23 are electrically connected and used to remotely control the opening and closing of the second valve 23. In embodiments of this application, by remotely operating the valve controller, the opening and closing of the second valve 23 can be controlled, thereby remotely adjusting the water supply of the parallel valve medical water treatment system.
[0033] To facilitate the control of the first valve 22, the first valve 22 is an electrically controlled valve. The valve controller is electrically connected to the first valve 22 and is used to remotely control the opening and closing of the first valve 22. In the embodiments of this application, the opening and closing of the first valve 22 can be remotely controlled by operating the valve controller.
[0034] In addition to being an electric valve, the first valve 22 can also be a manual valve. The first valve 22 is a normally open valve, which does not require frequent opening and closing. Using a manual valve can reduce costs.
[0035] The electrically controlled valve is an electric ball valve. Electric ball valves offer advantages such as low fluid resistance and high sealing reliability. Compared to electric proportional control valves, electric proportional control valves consist of an electric actuator and a valve body. The built-in controller converts the current / voltage signal into a motor angular stroke signal, which is then used to drive a gear and worm gear to reduce the output of the worm gear, thus controlling the valve stem's partial rotation from 0° to 90° and controlling the flow rate. Using electric ball valves simplifies the electrical control process and reduces costs.
[0036] Specifically, the inner diameter of the first valve 22 is D1, and the inner diameter of the second valve 23 is D2. In application, the sizes of D1 and D2 can be selected according to the actual application. The first valve 22 can be a normally open valve, and the second valve 23 can be a normally closed valve. When a large flow of disinfection or rinsing is required, the first valve 22 and the second valve 23 can be opened simultaneously to meet the water demand for disinfection and rinsing.
[0037] The overflow assembly 50 includes an overflow pipe 51 and a drain pipe 52; one end of the overflow pipe 51 is connected to the top of the water storage tank 10, and the other end of the overflow pipe 51 is connected to the drain pipe 52. In an embodiment of this application, after the pure water provided by the reverse osmosis water treatment equipment 30 passes through the pure water pipe 40, excess overflow water can be discharged through the overflow pipe 51.
[0038] In some embodiments, the parallel valve medical water treatment system further includes a drain valve 53, which is disposed at the bottom of the water storage tank 10 and is used to discharge the liquid from the water storage tank 10. In application, after disinfection and rinsing, the parallel valve medical water treatment system can open the drain valve 53 to discharge the wastewater in the water storage tank 10.
[0039] In specific implementation, the inlet of the drain pipe 52 can be connected to the bottom interface of the water storage tank 10. The discharge valve 43 is set on the drain pipe 52, located between the connection between the overflow pipe 51 and the drain pipe 52 and the bottom interface of the water storage tank 10, so that the overflow water and the sewage water are discharged through a single drain pipe 52, in order to reduce costs.
[0040] The reverse osmosis water treatment equipment 30 includes a circulating water pump 31 and a reverse osmosis processor 32. The circulating water pump 31 draws water from the storage tank 10 to the reverse osmosis processor 32. In the parallel valve medical water treatment system, during water supply, the circulating water pump 31 can be turned on, allowing water from the storage tank 10 to be drawn to the reverse osmosis processor 32 for reverse osmosis treatment to produce pure water. A portion of the pure water is supplied externally through the pure water pipeline 40 with a supply port 41 for use by dialysis patients. Excess pure water is returned to the storage tank 10 through the second interface at the second end of the pure water pipeline 40.
[0041] In some embodiments, the reverse osmosis processor 32 can be two-stage, with the two stages connected in series, so that the soft water can be treated by reverse osmosis to meet the water quality requirements of dialysis pure water. Specifically, each stage of the reverse osmosis processor 32 can be two, with the two reverse osmosis processors 32 connected in parallel.
[0042] The reverse osmosis water treatment equipment 30 also includes a return water pipeline 33 and a third valve 34; the return water pipeline 33 connects the return water port of the reverse osmosis processor 32 and the water storage tank 10; the third valve 34 is located in the return water pipeline 33. In an embodiment of this application, after the circulating water pump 31 is turned on, when the demand for pure water decreases, the third valve 34 can be opened, so that the water drawn from the water storage tank 10 is returned to the water storage tank 10 without reverse osmosis treatment, which helps to reduce the reverse osmosis processor 32's reverse osmosis treatment of excess water and improves the service life of the reverse osmosis processor 32.
[0043] In specific implementations, the parallel valve medical water treatment system also includes a water softening device, the outlet of which is connected to the inlet pipe 21 to provide softened water to the inlet pipe 21. In embodiments of this application, the system can be directly connected to municipal water supply, where the municipal water is sequentially softened by the water softening device and then treated by the reverse osmosis water treatment device 30 to form pure water for dialysis.
[0044] The volume of the water storage tank 10 is M, 80L≤M≤120L; the maximum water inlet flow rate of the water inlet pipe 21 is Q, 60L / min≤Q≤100L / min.
[0045] Taking the volume of water storage tank 10 as M=100 L as an example, the maximum water storage capacity of water storage tank 10 is half the volume of the tank. The water inlet flow rate of water inlet pipe 21 is Q=80L / min, and water is replenished according to the liquid level.
[0046] In application, taking the case where the inner diameter D1 of the first valve 22 is larger than the inner diameter D2 of the second valve 23 as an example, the flow rate during the day is usually higher than 60L / min. The first valve 22 of the electric ball valve with the larger inner diameter is normally open as the main valve, while the second valve 23 of the electric ball valve with the smaller inner diameter is normally closed.
[0047] When the flow rate is below 60L / min at night, the second valve 23 of the smaller inner diameter electric ball valve opens, and the first valve 22 of the larger inner diameter electric ball valve closes.
[0048] The routine chemical disinfection and backflushing procedure for medical water treatment systems with parallel valves is as follows:
[0049] The inhaled disinfectant peracetic acid solution is diluted and sent to the water storage tank 10, and then circulated to each part of the reverse osmosis water treatment equipment 30, pure water pipeline 40, and overflow component 50.
[0050] Disinfectant immersion disinfection, silent sterilization;
[0051] Disinfectant solution undergoes secondary circulation for sterilization;
[0052] After cleaning with disinfectant residue, open drain valve 53 and backwash the medical water treatment system with parallel valves using softened water. The chemical disinfection backwashing process requires a high flow rate; therefore, both valves 22 and 23 must be opened simultaneously.
[0053] The embodiments of this application have at least the following advantages:
[0054] 1. The embodiments of this application meet the requirements of different water volumes by controlling the opening and closing of the electric ball valve;
[0055] 2. The embodiments of this application can significantly reduce the number of switching operations;
[0056] 3. The embodiments of this application are simple to operate and have low usage costs;
[0057] 4. The embodiments of this application are stable in operation and occupy little space.
[0058] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.
Claims
1. A medical water treatment system with parallel valves, characterized in that, include: The water storage tank (10) has an inlet (11) and an outlet (12). The water inlet assembly (20) includes a water inlet pipe (21), a first valve (22) and a second valve (23). The water inlet pipe (21) is connected to the water inlet (11), and the first valve (22) and the second valve (23) are connected in parallel to the water inlet pipe (21). A reverse osmosis water treatment device (30) is connected to the inlet of the water storage tank (10) and the outlet (12); Pure water pipeline (40), the first interface of the first end of the pure water pipeline (40) is connected to the outlet of the reverse osmosis water treatment equipment (30), the second interface of the second end of the pure water pipeline (40) is connected to the water storage tank (10), and the pure water pipeline (40) is also provided with an external liquid supply port (41). An overflow assembly (50) is connected to the water storage tank (10) and is used to discharge liquid in the water storage tank (10) that is above a predetermined height.
2. The medical water treatment system with parallel valves according to claim 1, characterized in that, Also includes: Valve controller; The second valve (23) is an electrically controlled valve; The valve controller is electrically connected to the second valve (23) and is used to remotely control the opening and closing of the second valve (23).
3. The medical water treatment system with parallel valves according to claim 2, characterized in that, The first valve (22) is an electrically controlled valve, and the valve controller is electrically connected to the first valve (22) for remotely controlling the opening and closing of the first valve (22); or, The first valve (22) is a manual valve.
4. The medical water treatment system with parallel valves according to claim 3, characterized in that, The electrically controlled valve is an electric ball valve.
5. The medical water treatment system with parallel valves according to claim 1, characterized in that, The overflow assembly (50) includes: an overflow pipe (51) and a drain pipe (52); One end of the overflow pipe (51) is connected to the top of the water storage tank (10), and the other end of the overflow pipe (51) is connected to the drain pipe (52).
6. The medical water treatment system with parallel valves according to claim 1, characterized in that, Also includes: A discharge valve (53) is provided at the bottom of the water storage tank (10) for discharging liquid from the water storage tank (10).
7. The medical water treatment system with parallel valves according to claim 1, characterized in that, The reverse osmosis water treatment equipment (30) includes a circulating water pump (31) and a reverse osmosis processor (32), wherein the circulating water pump (31) is used to draw water from the water storage tank (10) to the reverse osmosis processor (32).
8. The medical water treatment system with parallel valves according to claim 7, characterized in that, The reverse osmosis water treatment equipment (30) also includes a return water pipeline (33) and a third valve (34); The return water pipe (33) is connected to the return water port of the reverse osmosis processor (32) and the water storage tank (10). The third valve (34) is located in the return water pipeline (33).
9. The medical water treatment system with parallel valves according to claim 1, characterized in that, Also includes: A water softening treatment device, wherein the outlet of the water softening treatment device is connected to the inlet pipe (21) for providing softened water to the inlet pipe (21).
10. The medical water treatment system with parallel valves according to claim 1, characterized in that, The volume of the water storage tank (10) is M, 80L≤M≤120L; The maximum water inlet flow rate of the inlet pipe (21) is Q, 60L / min≤Q≤100L / min.