A device and method for the pretreatment of dialysis water

Abstract

A kind of dialysis water pretreatment device and pretreatment method, belong to hemodialysis equipment field.It includes the gas removal cavity (24) and heating cavity (22) connected, gas removal device for dialysis water is arranged in gas removal cavity (24) and is used for heating heater for dialysis water is arranged in heating cavity (22), it is characterized by: setting body (4), gas removal cavity (24) and heating cavity (22) are arranged in body (4), liquid level cavity (28) is also arranged in body (4) and is communicated with gas removal cavity (24), flushing mechanism and disinfection mechanism are also arranged in the side of body (4), flushing mechanism and disinfection mechanism are communicated with liquid level cavity (28) and gas removal cavity (24) in time.In the dialysis water pretreatment device and pretreatment method in this, by setting disinfection mechanism and flushing mechanism in the side of body, disinfection and flushing are realized to each inner cavity of body, and the process of washing and disinfecting inside body is simplified.

Description

Technical Field

[0001] A pretreatment device and method for dialysis water, belonging to the field of hemodialysis equipment. Background Technology

[0002] Hemodialysis equipment includes a water treatment system, a mixing device for mixing dialysis water and dialysis concentrate, a device for pumping dialysis solution via an artificial kidney, and other auxiliary equipment. The dialysis water is ordinary tap water that has undergone filtration, softening, activated carbon adsorption, and reverse osmosis treatment to form reverse osmosis water. After obtaining the dialysis water, subsequent processes utilize it to prepare dialysis solution.

[0003] Before preparing dialysate, dialysis water needs to undergo a series of pretreatment operations, such as heating and degassing. However, in the existing technology, the pretreatment scheme for dialysis water has the following problems: (1) Since the dialysate will directly exchange with the patient's blood during the dialysis process, the safety requirements for the use of dialysate are high. Therefore, the components involved in the pretreatment and preparation of dialysate need to be disinfected. In the existing technology, the disinfection equipment for dialysis equipment mainly targets the external disinfection of the dialysis equipment, such as the technical solution disclosed in the Chinese invention patent with application number 202211613150.0, application date December 15, 2022, entitled "Disinfection Device and Method of Use for Dialysis Machine", and the technical solution disclosed in the Chinese utility model patent with application number 202122750941.5, application date November 10, 2021, entitled "An Automatic Disinfection Device for Hemodialysis Machine", etc. Although there are some existing technologies for disinfecting the internal tubing of dialysis equipment, they generally require special equipment and the operation process is quite complicated. (2) When performing dialysis on patients, the dialysate needs to be heated so that the temperature of the dialysate is close to the temperature of the blood. In existing technologies, the dialysate is generally heated directly by a heater, so the heater has a large workload and the temperature control process is difficult. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a pretreatment device and pretreatment method for dialysis water that achieves disinfection and rinsing of each internal cavity of the body by setting a disinfection mechanism and a rinsing mechanism on the side of the body, thereby simplifying the internal cleaning and disinfection process of the body.

[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: the pretreatment device for dialysis water includes a degassing chamber and a heating chamber connected together. A degassing device for degassing the dialysis water is provided in the degassing chamber, and a heater for heating the dialysis water is provided in the heating chamber. The device is characterized by having a main body, in which the degassing chamber and the heating chamber are located. A liquid level chamber communicating with the degassing chamber is also provided in the main body. A rinsing mechanism and a disinfection mechanism are also provided on the side of the main body. The rinsing mechanism and the disinfection mechanism connect the liquid level chamber and the degassing chamber in a time-sharing manner.

[0006] Preferably, the rinsing mechanism and the disinfection mechanism are respectively a cleaning valve and a disinfection valve located on the side of the main body. The inner ports of the cleaning valve and the disinfection valve are respectively connected to the liquid level chamber, and the outer ports of the cleaning valve and the disinfection valve are respectively connected to the degassing chamber inlet. The degassing chamber inlet is located on the side of the main body, and the inner port of the degassing chamber inlet is connected to the degassing chamber.

[0007] Preferably, a degassing chamber outlet is provided on the side of the body, the inner port of the degassing chamber outlet is connected to the degassing chamber, the outer port of the degassing chamber outlet is connected to the heating chamber inlet through a pipeline, and the inner port of the heating chamber inlet is connected to the heating chamber.

[0008] Preferably, a water storage chamber is also provided in the body, and the heating chamber is connected to the water storage chamber through a pipeline.

[0009] Preferably, the heating chamber outlet located on the side of the main body is connected to the water storage chamber inlet via a pipeline, the inner port of the water storage chamber inlet is connected to the water storage chamber, and a water storage chamber outlet connected to the water storage chamber is also provided below the water storage chamber inlet.

[0010] Preferably, a preheating mechanism is provided at the end face of the body, the dialysis water to be pretreated is introduced into the preheating mechanism, and the outlet of the preheating mechanism is connected to the liquid level chamber.

[0011] Preferably, a cover plate is provided on the top of the main body. The cover plate is installed on the top of the degassing chamber, heating chamber, liquid level chamber and water storage chamber. A liquid level gauge, a pressure stabilizing valve and a heater are installed on the cover plate. The liquid level gauge enters the liquid level chamber, the pressure stabilizing valve is located at the top of the water storage chamber and the heater enters the heating chamber.

[0012] Preferably, a reflux port and an output port are also provided on the side of the body, the inner ports of the reflux port and the output port are respectively connected to the liquid level chamber, and the outlet of the pressure regulating valve is connected to the reflux port.

[0013] A method for pretreatment of dialysis water, characterized by comprising the following steps:

[0014] Step 1, Pretreatment: The dialysis water to be pretreated enters the level chamber, then enters the degassing chamber for degassing, and after degassing, the dialysis water enters the heating chamber and is heated by the heater. After the dialysis water is heated to the preset temperature in the heating chamber, it is sent to the subsequent process.

[0015] Step 2, Disinfection: External disinfectant enters the liquid level chamber and then enters the degassing chamber. The disinfection mechanism is turned on, and the disinfectant is simultaneously output from the disinfection valve and sent into the degassing chamber through the external pipeline.

[0016] After being discharged from the degassing chamber, the disinfectant enters the heating chamber. After being discharged from the heating chamber, the disinfectant circulates between the liquid level chamber, the degassing chamber, and the heating chamber.

[0017] Step 3, rinsing: The external rinsing fluid enters the liquid level chamber and then enters the degassing chamber. The rinsing mechanism is turned on, and the rinsing fluid is simultaneously output from the cleaning valve and sent into the degassing chamber through the external pipeline. After the rinsing fluid is output from the degassing chamber, it enters the heating chamber and is discharged after being output from the heating chamber.

[0018] Compared with existing technologies, the beneficial effects of this invention are as follows: In this pretreatment device and method for dialysis water, disinfection and rinsing mechanisms are provided on the side of the main body to disinfect and rinse each internal cavity of the main body, simplifying the internal disinfection process. When the dialysis water is heated in the heating chamber, the heating rod is controlled by a temperature controller, further achieving constant temperature control of the dialysis water. Preheating is performed through a preheating mechanism, reducing the load on the heating rod, and the use of a level gauge to control the liquid level improves the reliability of constant temperature control of the dialysis water. Attached Figure Description

[0019] Figure 1 This is an isometric view of a pretreatment device for dialysis water.

[0020] Figure 2 This is a front view of the pretreatment device for dialysis water.

[0021] Figure 3 for Figure 2 The right view.

[0022] Figure 4 for Figure 2 Rear view.

[0023] Figure 5 for Figure 3 Sectional view along the AA direction.

[0024] Figure 6 for Figure 3 Sectional view along the BB direction.

[0025] Figure 7 for Figure 3 Sectional view along the CC direction.

[0026] The components are as follows: 1. Inlet valve; 2. Return port; 3. Disinfection valve; 4. Body; 5. Cleaning valve; 6. Bracket; 7. Output port; 8. Water storage chamber inlet; 9. Water storage chamber outlet; 10. Heating chamber inlet; 11. Degassing chamber inlet; 12. Heat exchange cover plate; 13. Degassing chamber outlet; 14. Temperature measuring port; 15. Heating chamber outlet; 16. Heating rod; 17. Pressure stabilizing valve; 18. Liquid level gauge; 19. Cover plate; 20. Wastewater inlet; 21. Wastewater outlet; 22. Heating chamber; 23. Water storage chamber; 24. Degassing chamber; 25. Raw water channel; 26. Wastewater channel; 27. Heat exchange plate; 28. Liquid level chamber; 29. ​​Raw water inlet; 30. Raw water outlet. Detailed Implementation

[0027] Figures 1-7 This is the preferred embodiment of the present invention, which is described below in conjunction with the accompanying drawings. Figures 1-7 The present invention will be further described below.

[0028] like Figures 1-4 As shown, a pretreatment device for dialysis water (hereinafter referred to as the pretreatment device) includes a body 4, which is rectangular in shape. Supports 6 are respectively provided at the bottom of the front and rear sides of the body 4 to fix the body 4. A cover plate 19 is provided on the top of the body 4 to close the top of the body 4.

[0029] Combination Figure 5 The main body 4 contains multiple chambers: a liquid level chamber 28, a degassing chamber 24, a heating chamber 22, and a water storage chamber 23, all of which are vertically arranged inside the main body 4. After the cover plate 19 is fixed, it seals the upper ports of the liquid level chamber 28, degassing chamber 24, heating chamber 22, and water storage chamber 23. The liquid level chamber 28, degassing chamber 24, heating chamber 22, and water storage chamber 23 are connected in sequence to form a flow channel for dialysis water, wherein the liquid level chamber 28 and the degassing chamber 24 are connected by a channel formed within the main body 4.

[0030] A heating rod 16, a pressure regulating valve 17, and a level gauge 18 are installed on the cover plate 19. The level gauge 18 enters the level chamber 28 from the bottom of the cover plate 19 to detect the liquid level in the level chamber 28. The heating rod 16 enters the heating chamber 22 from the bottom of the cover plate 19 to heat the dialysis water in the heating chamber 22. The heated dialysis water is then sent from the heating chamber 22 into the water storage chamber 23. The pressure regulating valve 17 is located at the top of the water storage chamber 23 and is used to regulate the pressure of the dialysis water. A degassing device is installed in the degassing chamber 24 to degas the dialysis water and eliminate air bubbles. The degassing device can be implemented using a technical solution known in the art, such as the technical solution disclosed in Chinese Invention Patent Application No. 201110173612.7, filed on June 27, 2011, entitled "Degassing Device for Hemodialysis Equipment," the principle of which will not be elaborated here.

[0031] On the right side of the main body 4, from top to bottom, are arranged an inlet valve 1, a disinfection valve 3, and a cleaning valve 5, all of which are solenoid valves. On the left side of the main body 4, from top to bottom, are a degassing chamber outlet 13 and a degassing chamber inlet 11. The inner ends of the degassing chamber outlet 13 and the degassing chamber inlet 11 are respectively connected to the degassing chamber 24. One port of the disinfection valve 3 and the cleaning valve 5 are respectively connected to the liquid level chamber 28. The other port of the disinfection valve 3 and the cleaning valve 5 are respectively connected to the degassing chamber outlet 13 through pipes and fittings (not shown in the figure).

[0032] A heating chamber outlet 15 and a reflux port 2 are sequentially arranged on the upper part of the front end face of the main body 4, and a heating chamber inlet 10 and an outlet 7 are sequentially arranged on the lower part of the front end face of the main body 4. The inner ports of the heating chamber outlet 15 and the heating chamber inlet 10 are respectively connected to the heating chamber 22. The outlet port of the degassing chamber outlet 13 is connected to the heating chamber inlet 10 through a pipeline (not shown in the figure). The inner ports of the reflux port 2 and the outlet 7 are respectively connected to the liquid level chamber 28 through a channel inside the main body 4. The outlet port of the pressure regulating valve 17 at the top of the water storage chamber 23 is connected to the reflux port 2 through a pipeline (not shown in the figure). When the dialysis water in the water storage chamber 23 overflows, it can flow back into the liquid level chamber 28.

[0033] A water storage chamber inlet 8 and a water storage chamber outlet 9 are provided between the return port 2 and the output port 7. The water storage chamber inlet 8 and the water storage chamber outlet 9 are arranged vertically, and their inner ports are connected to the water storage chamber 23. The output port of the heating chamber outlet 15 is connected to the water storage chamber inlet 8 via a pipeline (not shown in the figure). The outlet of the water storage chamber outlet 9 serves as the output port for the dialysis water of this pretreatment device and is connected to the subsequent process of the dialysis equipment via a pipeline. A temperature measuring port 14 is also provided on the side of the heating chamber outlet 15. A temperature sensor is installed at the temperature measuring port 14, and the probe of the temperature sensor enters the heating chamber 22 to monitor the water temperature inside the heating chamber 22. The aforementioned output port 7, water storage chamber inlet 8, water storage chamber outlet 9, and heating chamber inlet 10 are led out through the corresponding side brackets 6.

[0034] A preheating mechanism is also provided at the rear end of the main body 4. The inlet of the aforementioned water inlet valve 1 is connected to an external pipeline for supplying dialysis water, the outlet of the water inlet valve 1 is connected to the input end of the preheating mechanism, and the output end of the preheating mechanism is connected to the liquid level chamber 28. Figures 6-7 The preheating mechanism includes a heat exchange cover plate 12, on the inner wall of which a reciprocating wastewater flow channel 26 is provided. A wastewater inlet 20 and a wastewater outlet 21 are respectively provided in the upper and lower parts of the heat exchange cover plate 12, and the inner ports of the wastewater inlet 20 and the wastewater outlet 21 are respectively connected to the starting point and the ending point of the wastewater flow channel 26.

[0035] A reciprocating raw water channel 25 is provided on the rear end face of the main body 4. The wastewater channel 26 has the same outline as the raw water channel 25, and after the heat exchange cover plate 12 is fixed to the rear end face of the main body 4, the wastewater channel 26 and the raw water channel 25 overlap. A heat exchange plate 27 is provided between the wastewater channel 26 and the raw water channel 25. The heat exchange plate 27 is a metal plate, and the outer ring of the front and rear end faces of the heat exchange plate 27 has a sealing ring to seal with the wastewater channel 26 and the raw water channel 25 respectively. A raw water inlet 29 and a raw water outlet 30 are provided at the beginning and end of the raw water channel 25, respectively. The raw water outlet 30 is connected to the liquid level chamber 28 through a channel in the main body 4. The inner port of the aforementioned water inlet valve 1 is connected to the raw water inlet 29 through a channel in the main body 4.

[0036] The specific working process and working principle are as follows:

[0037] (1) Pretreatment process: The dialysis water to be pretreated is sent through the external pipeline into the raw water channel 25 through the inlet valve 1, and then enters the liquid level chamber 28 after flowing through the raw water channel 25. At the same time, the wastewater sent from the dialysis equipment is connected to the wastewater inlet. During the process of the wastewater flowing through the wastewater channel 26, the dialysis water in the raw water channel 25 is preheated. After the preheating is completed, it is discharged from the wastewater outlet.

[0038] After preheating, the dialysis water enters the level chamber 28 through the raw water outlet 30. The level gauge 18 monitors the water level in the level chamber 28. When the water level in the level chamber 28 reaches the upper limit, the inlet valve 1 is controlled to stop the water intake. The dialysis water in the level chamber 28 enters the degassing chamber 24 through the internal channel of the main body 4, and is degassed by the degassing device in the degassing chamber 24. After degassing, the dialysis water is output from the degassing chamber outlet 13 and enters the heating chamber 22 through the external pipeline connected to the heating chamber inlet 10.

[0039] When the dialysis water is heated in the heating chamber 22, the heating rod 16 is controlled by a temperature controller to further achieve constant temperature control of the dialysis water. Preheating is also performed by a preheating mechanism, reducing the load on the heating rod 16. Simultaneously, the liquid level is controlled by a level gauge 18, improving the reliability of constant temperature control of the dialysis water.

[0040] After the dialysis water is heated to a preset temperature in the heating chamber 22, it is discharged from the heating chamber outlet 15 and sent to the water storage chamber 23 through the pipeline connected to the water storage chamber inlet 8. The dialysis water in the water storage chamber 23 is then output through the water storage chamber outlet 9 and sent to the subsequent process for the preparation of dialysis solution.

[0041] (2) Disinfection process: The external disinfectant enters the raw water channel 25 through the inlet valve 1, and then enters the liquid level chamber 28 after flowing through the raw water channel 25. After entering the liquid level chamber 28 through the raw water outlet 30, the disinfectant enters the degassing chamber 24 through the internal channel of the main body 4. The diameter of the channel connecting the liquid level chamber 28 and the degassing chamber 24 inside the main body 4 is small, so the disinfection valve 3 is opened, and the disinfectant is simultaneously output from the disinfection valve 3 and sent into the degassing chamber 24 through the external pipeline.

[0042] After being output from the degassing chamber 24, the disinfectant is further sent to the heating chamber 22 through an external pipeline, and then further sent to the water storage chamber 23 through the heating chamber 22. After being output from the water storage chamber 23, the disinfectant is returned to the inlet valve 1 through an external circulation device (such as a circulation pump), thereby achieving the circulation disinfection of each inner cavity of the main body 4.

[0043] (3) Rinsing process: The external rinsing fluid (such as pure water) enters the raw water channel 25 through the inlet valve 1, and then enters the liquid level chamber 28 after flowing through the raw water channel 25. After entering the liquid level chamber 28 through the raw water outlet 30, the rinsing fluid enters the degassing chamber 24 through the internal channel of the main body 4. The diameter of the channel connecting the liquid level chamber 28 and the degassing chamber 24 inside the main body 4 is small, so the disinfection valve 3 is opened, and the rinsing fluid is simultaneously output from the disinfection valve 3 and sent into the degassing chamber 24 through the external pipeline.

[0044] After being output from the degassing chamber 24, the flushing fluid is further sent to the heating chamber 22 through an external pipeline, and then further sent to the water storage chamber 23 through the heating chamber 22. After being output from the water storage chamber 23, the flushing fluid is discharged, thereby achieving flushing of each internal cavity of the main body 4.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A pretreatment device for dialysis water, comprising a degassing chamber (24) and a heating chamber (22) connected together, wherein a degassing device for degassing the dialysis water is provided in the degassing chamber (24), and a heater for heating the dialysis water is provided in the heating chamber (22), characterized in that: The body (4) is provided, and the degassing chamber (24) and the heating chamber (22) are provided inside the body (4). A liquid level chamber (28) communicating with the degassing chamber (24) is also provided inside the body (4). A rinsing mechanism and a disinfection mechanism are also provided on the side of the body (4). The rinsing mechanism and the disinfection mechanism communicate with the liquid level chamber (28) and the degassing chamber (24) respectively. A preheating mechanism is provided at the end face of the main body (4). The dialysis water to be pretreated is introduced into the preheating mechanism, and the outlet of the preheating mechanism is connected to the liquid level chamber (28). The preheating mechanism includes a heat exchange cover plate (12) fixed to the rear end face of the main body (4). A reciprocating wastewater channel (26) is provided on the inner wall of the heat exchange cover plate (12). A reciprocating raw water channel (25) is also provided on the rear end face of the main body (4). The wastewater channel (26) and the raw water channel (25) have the same outline and overlap front and back. The wastewater channel (26) and the raw water channel (25) are separated by a heat exchange plate (27). The outlet of the raw water channel (25) is connected to the liquid level chamber (28). The wastewater sent from the dialysis equipment is connected to the wastewater inlet at the starting point of the wastewater channel (26). The rinsing mechanism and the disinfection mechanism are respectively a cleaning valve (5) and a disinfection valve (3) located on the side of the main body (4). The inner ports of the cleaning valve (5) and the disinfection valve (3) are connected to the liquid level chamber (28) respectively. The outer ports of the cleaning valve (5) and the disinfection valve (3) are connected to the degassing chamber inlet (11) respectively. The degassing chamber inlet (11) is located on the side of the main body (4). The inner port of the degassing chamber inlet (11) is connected to the degassing chamber (24). A degassing chamber outlet (13) is provided on the side of the main body (4). The inner port of the degassing chamber outlet (13) is connected to the degassing chamber (24). The outer port of the degassing chamber outlet (13) is connected to the heating chamber inlet (10) through a pipeline. The inner port of the heating chamber inlet (10) is connected to the heating chamber (22). A water storage chamber (23) is also provided inside the main body (4), and the heating chamber (22) is connected to the water storage chamber (23) through a pipeline. The heating chamber outlet (15) located on the side of the main body (4) is connected to the water storage chamber inlet (8) through a pipeline. The inner port of the water storage chamber inlet (8) is connected to the water storage chamber (23). A water storage chamber outlet (9) connected to the water storage chamber (23) is also provided below the water storage chamber inlet (8). A cover plate (19) is provided on the top of the main body (4). The cover plate (19) is enclosed on the top of the degassing chamber (24), the heating chamber (22), the liquid level chamber (28) and the water storage chamber (23). A liquid level gauge (18), a pressure regulating valve (17) and a heater are installed on the cover plate (19). The liquid level gauge (18) enters the liquid level chamber (28), the pressure regulating valve (17) is located on the top of the water storage chamber (23), and the heater enters the heating chamber (22).

2. The pretreatment device for dialysis water according to claim 1, characterized in that: A reflux port (2) and an output port (7) are provided on the side of the main body (4). The inner ports of the reflux port (2) and the output port (7) are respectively connected to the liquid level chamber (28), and the outlet of the pressure regulating valve (17) is connected to the reflux port (2).

3. A pretreatment method implemented using the pretreatment apparatus for dialysis water as described in claim 1 or 2, characterized in that: Includes the following steps: Step 1, Pretreatment: The dialysis water to be pretreated enters the level chamber (28), and then enters the degassing chamber (24) for degassing. After degassing, the dialysis water enters the heating chamber (22) and is heated by the heater. The dialysis water is heated to the preset temperature in the heating chamber (22) and then sent to the subsequent process. Step 2, disinfection: External disinfectant enters the liquid level chamber (28) and then enters the degassing chamber (24). The disinfection mechanism is turned on, and the disinfectant is simultaneously output from the disinfection valve (3) and sent into the degassing chamber (24) through the external pipeline. After the disinfectant is output from the degassing chamber (24), it enters the heating chamber (22). After the disinfectant is output from the heating chamber (22), it circulates between the liquid level chamber (28), the degassing chamber (24), and the heating chamber (22). Step 3, rinsing: The external rinsing fluid enters the liquid level chamber (28) and then enters the degassing chamber (24). The rinsing mechanism is turned on, and the rinsing fluid is simultaneously output from the cleaning valve (5) and sent into the degassing chamber (24) through the external pipeline. After the rinsing fluid is output from the degassing chamber (24), it enters the heating chamber (22). After the rinsing fluid is output from the heating chamber (22), it is discharged.

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