Liquid preparation module and concentrated dialysate concentrated supply system

Abstract

The utility model discloses a liquid preparation module and a concentrated dialysate supply system, and relates to the technical field of medical instruments, a raw material barrel, a stirring barrel, different pipelines and assemblies are combined to form the liquid preparation module, pipeline closed powder supply is realized, and a liquid inlet pipeline and a liquid outlet pipeline are connected with the raw material barrel and the stirring barrel to form large loop circulation. Reverse osmosis water can enter the raw material barrel from the stirring barrel under external pressure and enters the backflow stage after being circularly dissolved for a set time, a solution flows back to the stirring barrel through cooperation of a pipeline and the backflow assembly, and a qualified solution is obtained in the stirring barrel through stirring of the stirring assembly. Compared with open space operation of manual powder feeding, the liquid preparation module effectively controls external factors influencing solution preparation, the secondary pollution risk and the labor cost can be obviously reduced, so that the solution quality is improved, the liquid preparation module is particularly suitable for the liquid preparation process of the A concentrated solution, the raw material barrel and the stirring barrel which are split can be flexibly placed, and the production cost is reduced. The device is suitable for various occasions, especially for narrow spaces.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a solution preparation module and a centralized supply system for concentrated dialysis fluid. Background Technology

[0002] The core of centralized dialysis concentrate supply systems for hemodialysis lies in the concentrate preparation process. In existing preparation modules, the powder addition process is done manually, requiring manual cutting of the packaged dry powder and manual addition into the preparation tank. This process is cumbersome, and the addition of powder in an open space poses a risk of secondary contamination. Furthermore, similar products typically use external impeller stirring or magnetic stirring devices to dissolve the dialysis powder. Prolonged direct contact with the solution makes it susceptible to acid corrosion, which can easily lead to the growth of endotoxins and pose safety hazards. Utility Model Content

[0003] The main objective of this invention is to propose a solution preparation module that addresses the technical problem of secondary pollution caused by open-space powder addition in existing solution preparation processes of centralized concentrated dialysis fluid systems. Furthermore, the solution also addresses the technical problem that, for example, traditional stirring devices such as external impellers or magnetic stirrers are typically used to dissolve dialysis powder in the dissolution stage, which, after prolonged direct contact with the solution, cannot resist acid corrosion, easily leading to the formation of endotoxins and posing safety hazards.

[0004] To achieve the above objectives, this utility model proposes a liquid preparation module, including a stirring tank connected to reverse osmosis water, and the stirring tank being connected to a stirring assembly. In a preferred embodiment, the stirring tank is connected to the reverse osmosis water via a pipe.

[0005] It also includes a pre-packaged dialysis powder feed tank, an inlet pipe, an outlet pipe, a suction circuit, and a reflux assembly. The inlet pipe connects the mixing tank and the feed tank, allowing reverse osmosis water to enter the feed tank from the mixing tank under pressure to form a solution. The outlet pipe connects the mixing tank and the feed tank, allowing the solution to enter the mixing tank after atmospheric pressure equilibrium is reached in the feed tank. The suction circuit connects the inlet pipe and the mixing tank, and the suction circuit is connected to the reflux assembly, allowing the dissolved solution to flow back from the feed tank to the mixing tank under pressure.

[0006] Encapsulation technology mainly refers to the use of appropriate materials and techniques to seal raw materials or products, forming a sterile environment, ensuring the safe storage of raw materials and products, extending shelf life, preventing microbial contamination, and facilitating accurate determination of dosage or amount. Those skilled in the art can adopt encapsulation technologies suitable for this technical solution based on actual conditions. Here, a preferred but non-limiting method is to fill dialysis dry powder into raw material barrels through production line filling. Specific filling parameters and raw material or product specifications can be determined according to actual conditions.

[0007] This invention utilizes a raw material tank, a mixing tank, and various pipelines and components to form a liquid preparation module, achieving a closed-loop powder supply. During the powder supply and dissolution stages, the inlet and outlet pipelines are connected to the raw material tank and the mixing tank to form a large-loop circulation. Under external pressure, reverse osmosis water enters the raw material tank from the mixing tank through the inlet pipeline to dissolve the dialysis powder. After accumulating a certain amount of solution in the raw material tank cavity, it returns to the mixing tank through the outlet pipeline under atmospheric pressure, overcoming gravity to achieve closed-loop powder supply and large-loop circulation to dissolve the dialysis powder. After a set circulation dissolution time, the dialysis powder is basically dissolved in the reverse osmosis water, entering the reflux stage. Through the outlet pipeline, inlet pipeline, and suction circuit, in conjunction with the reflux component, the basically dissolved solution is transferred from the raw material tank back to the mixing tank. The mixing tank then uses a stirring component to stir the solution evenly.

[0008] Compared to the existing open-space operation of manual powder addition, the solution preparation module of this utility model effectively controls the external factors affecting the preparation of the solution, which can significantly reduce the risk of secondary pollution and labor costs, thereby improving the solution quality. It is especially suitable for the preparation process of concentrated solution A. In addition, the separate raw material tank and stirring tank can be flexibly placed in actual operation, which is suitable for various occasions, especially for narrow spaces.

[0009] Preferably, the upper part of the raw material barrel is provided with a first liquid inlet and a first liquid outlet, and the inside of the raw material barrel is provided with a liquid outlet pipe connected to the first liquid outlet and a first liquid inlet pipe connected to the first liquid inlet, with the end of the liquid outlet pipe and the end of the first liquid inlet pipe located near the bottom of the raw material barrel cavity;

[0010] The upper part of the mixing tank is provided with a mixing inlet 1 and a mixing inlet 2, and the bottom of the mixing tank is provided with a mixing outlet.

[0011] The liquid inlet pipe connects the first liquid inlet and the stirring liquid outlet. The liquid inlet pipe connects the stirring pump and the dissolving electric valve. The stirring pump is located near the stirring tank, with the input end of the stirring pump facing the stirring tank and the output end of the stirring pump facing the dissolving electric valve.

[0012] The liquid outlet pipe connects the first liquid outlet and the stirring inlet.

[0013] The liquid suction circuit connects the liquid inlet pipe and the stirring inlet.

[0014] By further defining the specific characteristics of the raw material tank, mixing tank, mixing pump, dissolving electric valve, and different pipelines, the accelerated pressurization by the mixing pump can effectively ensure that reverse osmosis water enters the bottom of the raw material tank through the inlet pipeline from the mixing tank to dissolve the dialysis dry powder. The dialysis dry powder can be dissolved from bottom to top in the raw material tank cavity, and after a certain amount of liquid accumulates in the raw material tank cavity, it is forced back to the mixing tank through the outlet pipeline. The mixing tank then circulates from the supply pipeline to the raw material tank, forming a large loop circulation.

[0015] More preferably, the stirring assembly includes a second inlet pipe and a stirring electric valve. The upper part of the stirring tank is provided with a stirring inlet three. The second inlet pipe is located inside the stirring tank cavity and is connected to the stirring inlet three. The end of the second inlet pipe is located near the bottom of the stirring tank cavity. The end of the second inlet pipe has a second opening with an opening area narrower than the cross-sectional area of ​​the second inlet pipe cavity.

[0016] The inlet pipeline extends from the stirring pump and the dissolving electric valve to a circulating stirring branch, which is connected to the stirring inlet three-way connector. The circulating stirring branch is connected to the stirring electric valve. An electrical conductivity detection module is installed inside the stirring tank to detect whether the electrical conductivity value of the solution in the tank meets the set requirements. It is understood that the specific value of this preset electrical conductivity threshold can be determined based on actual conditions, and this application does not impose specific limitations on it.

[0017] By further configuring a circulating stirring branch, a third inlet, an electric stirring valve, and a second inlet pipe, and by turning on the electric stirring valve and stirring pump while closing other valves, the stirring stage begins after the solution is transferred back to the stirring tank. The second inlet pipe, the circulating stirring branch, and the connection section of the inlet pipe from the bottom of the stirring tank to the circulating stirring branch form a self-circulating loop. The pressure in this loop is continuous and uninterrupted, resulting in minimal pressure loss and maintaining high pressure throughout the process. This ensures the complete dissolution of any undissolved mixture that was initially suspended in the closed pipes, as well as any small amount of residue remaining on the inner wall of the stirring tank, to obtain a qualified solution. Because it is a fully closed system, solution leakage is prevented. Compared to traditional external stirring devices that are in direct contact with the solution for extended periods, this solution avoids corrosion, reduces the risk of secondary contamination and microbial growth, and avoids the endotoxin problem caused by acid corrosion resulting from prolonged contact between traditional stirring devices and the solution. Furthermore, the accelerated pressurization by the stirring pump increases the flow rate of the solution after passing through the narrow second opening of the second inlet pipe, while simultaneously applying greater pressure, resulting in rapid stirring and uniform dissolution of the solution. The larger the ratio of the cross-sectional area of ​​the second inlet pipe cavity to the opening area of ​​the second opening, the greater the pressure exerted on the solution within the second inlet pipe cavity, and the more effectively the undissolved mixture is dissolved. Preferably, the second opening is a small orifice.

[0018] Further preferably, a first opening with an area smaller than the cross-sectional area of ​​the first inlet pipe cavity is provided at the end of the first inlet pipe. The function and preferred embodiment of providing a narrower first opening at the end of the first inlet pipe are the same as those of the second opening.

[0019] Further preferably, the ends of the first and second inlet pipes are spherical in shape, which helps to ensure a smooth fluid transition and avoid accumulation. Further preferably, the first and second openings are small orifices, which helps to create high pressure within the cavity while ensuring a smooth fluid transition, thereby improving the solubility of the dialysis powder in the solution during large reflux circulation dissolution or self-circulating stirring. Preferably, the bottom of the stirring chamber is a basic cone with its top facing downwards, and the top of the cone is connected to the second outlet, which helps to empty the stirring chamber and avoid residue.

[0020] Preferably, the second inlet pipe extends from near the bottom of the mixing tank cavity towards the tank wall in several branch pipes, with the ends of the branch pipes serving as the ends of the second inlet pipes. These ends of the second inlet pipes are close to the tank wall and have corresponding second openings, thereby creating a circulating flow within the mixing tank cavity during operation. Multiple streams of water ejected from the multiple second openings quickly converge and form a vortex after forming a circulating flow, improving the mixing and dissolving efficiency within the mixing tank. In a further embodiment, the second inlet pipe is inverted T-shaped, with the two second openings facing 180° away from each other.

[0021] Preferably, the liquid suction circuit includes a first liquid suction branch and a second liquid suction branch. The reflux assembly includes a pressure booster, a first reflux electric valve, and a second reflux electric valve. The inlet pipe between the stirring pump and the dissolving electric valve extends into the first liquid suction branch and connects to the stirring inlet port two. The pressure booster and the first reflux electric valve are sequentially connected in the first liquid suction branch from the inlet pipe to the stirring inlet port two. The dissolving electric valve and the second reflux electric valve are connected in parallel on the inlet pipe. The parallel branch formed by the connection of the inlet pipe and the second reflux electric valve is the second liquid suction branch.

[0022] By setting a first liquid suction branch and a second liquid suction branch at corresponding positions, as well as a first reflux electric valve and a pressure booster on the first liquid suction branch, and a second reflux electric valve on the second liquid suction branch, the preferred reflux assembly and liquid suction circuit are set on the large loop circulation, which can effectively use pressure to drain the solution in the raw material tank and return it to the mixing tank.

[0023] Preferably, the raw material tank has a top plate with a first inlet and a first outlet. Both the first inlet and the first outlet are threadedly connected to a water tank connector, and a sealing gasket is provided around the threaded contact area. The upper end of the water tank connector is threadedly connected to a quick connector. This preferred method provides a sealing structure for the raw material tank. Simply inserting the inlet and outlet pipes into the quick connector forms a closed pipeline, making operation convenient and simple.

[0024] Another aspect of this invention proposes a centralized system for supplying concentrated dialysate, employing a solution preparation module as described in any of the aforementioned schemes. This provides the corresponding beneficial effects of the aforementioned schemes, which will not be elaborated upon here.

[0025] In a preferred embodiment, the solution preparation module is connected to the solution storage module, and the solution preparation module outputs the prepared solution to the solution storage module. The solution storage module is used to store the concentrated solution that meets medical requirements after dissolution and stirring, and to supply it to the dialysis device as needed. Attached Figure Description

[0026] 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 the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram illustrating the macroscopic principle of the centralized dialysis fluid supply and concentration system of this utility model within a dialysis system.

[0028] Figure 2 This is a schematic diagram of the liquid preparation module of this utility model;

[0029] Figure 3 This is a schematic diagram of the liquid preparation module of this utility model during the dissolution stage;

[0030] Figure 4 This is a schematic diagram of the liquid preparation module of this utility model during the reflux stage;

[0031] Figure 5 This is a schematic diagram of the liquid preparation module of this utility model during the stirring stage;

[0032] Figure 6 This is a schematic diagram of an embodiment of the second liquid inlet pipe of this utility model;

[0033] Figure 7 This is a schematic diagram of the structure of the second inlet pipe of this utility model in a horizontal plane. Figure 1 ;

[0034] Figure 8 This is a schematic diagram of the structure of the second inlet pipe of this utility model in a horizontal plane. Figure 2 ;

[0035] Figure 9 This is a schematic diagram of an embodiment of the sealing structure for the raw material barrel of this utility model;

[0036] Figure 10This is a schematic diagram of an embodiment of the centralized dialysis fluid supply system of this utility model.

[0037] In the attached diagram: 1-Raw material tank, 11-Top plate, 111-First liquid inlet, 112-First liquid inlet pipe, 1121-End of first liquid inlet pipe, 1122-First opening, 113-Liquid inlet pipe, 1131-Liquid suction circuit, 11311-First liquid suction branch, 11312-Second liquid suction branch, 1132-Circulating stirring branch, 121-First liquid outlet, 122-Liquid outlet pipe, 1221-End of liquid outlet pipe, 123-Liquid outlet pipe, 13-Quick connector, 14- Water tank connector, 15-sealing gasket, 2-stirring tank, 211-stirring inlet 1, 212-stirring inlet 2, 213-stirring inlet 3, 221-second outlet, 31-stirring pump, 32-dissolving electric valve, 4-reflux assembly, 41-pressurizer, 42-first reflux electric valve, 43-second reflux electric valve, 5-stirring assembly, 51-stirring electric valve, 52-second inlet pipe, 521-end of second inlet pipe, 522-second opening, 6-storage module.

[0038] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] 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 without creative effort are within the protection scope of the present utility model.

[0040] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0041] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0042] This application proposes a solution preparation module, as shown in the attached document. Figure 1 and attached Figure 2 As shown, the system includes a mixing tank 2 connected to reverse osmosis water, and the mixing tank 2 is connected to a mixing assembly 5. In a preferred embodiment, the mixing tank 2 is connected to reverse osmosis water via a pipe, as shown in the attached diagram. Figure 1 As shown.

[0043] It also includes a raw material container 1 containing pre-packaged dialysis dry powder, an inlet pipe 113, an outlet pipe 123, a suction circuit 1131, and a reflux assembly 4.

[0044] The liquid inlet pipe 113 connects the stirring tank 2 and the raw material tank 1, so that reverse osmosis water can enter the raw material tank 1 from the stirring tank 1 under pressure to form a solution;

[0045] The liquid outlet pipe 123 connects the stirring tank 2 and the raw material tank 1 so that the solution accumulates in the raw material tank 1 to form atmospheric pressure equilibrium before entering the stirring tank 2;

[0046] The liquid suction circuit 1131 is connected to the liquid inlet pipe 113 and the stirring tank 2. The liquid suction circuit 1131 is connected to the reflux assembly 4 so that the dissolved solution flows back from the raw material tank 1 to the stirring tank 2 under pressure.

[0047] This application constructs a large-loop circulation system by connecting the raw material tank 1, the stirring tank 2, the inlet pipe 113, and the outlet pipe 123. During the dissolution stage, after connecting the pipes, for example, by inserting a quick connector into the raw material tank 1, under external pressure, reverse osmosis water enters the raw material tank 1 from the stirring tank 2 via the inlet pipe 113, mixing and dissolving with the dialysis powder to form a solution. When the solution accumulates to a certain level in the chamber of the raw material tank 1, i.e., when the pressure inside and outside the raw material tank 1 is equal, the outlet pipe 123 returns to the stirring tank 2. The solution in the stirring tank 2 then re-enters the raw material tank 1 via the inlet pipe 113, forming a large-loop reflux to achieve basic dissolution of the dialysis powder. After a set dissolution time, the reflux stage begins, as shown in the attached diagram. Figure 4 As shown, when the reflux assembly 4 is turned on, the dissolved solution is refluxed through the outlet pipe 4, the inlet pipe 113, and the suction circuit 1131, and transferred as a whole to the stirring tank 2. The stirring assembly 3 is used to stir the solution in the stirring tank 2 until it is homogeneous.

[0048] Preferred options are listed below. Figure 2 As shown, the upper part of the raw material barrel 1 is provided with a first liquid inlet 111 and a first liquid outlet 121. The inside of the raw material barrel 1 has a liquid outlet pipe 122 connected to the first liquid outlet 121 and a first liquid inlet pipe 112 connected to the first liquid inlet 111. The end of the liquid outlet pipe 1221 and the end of the first liquid inlet pipe 1121 are located near the bottom of the cavity of the raw material barrel 1.

[0049] The upper part of the mixing tank 2 is provided with a mixing inlet 211 and a mixing inlet 212, and the bottom of the mixing tank 2 is provided with a mixing outlet 221.

[0050] The liquid inlet pipe 113 connects the first liquid inlet 111 and the stirring outlet 221. The liquid inlet pipe 113 connects the stirring pump 31 and the dissolving electric valve 32. The stirring pump 31 is located near the stirring tank 2. The input end of the stirring pump 31 faces the stirring tank 2, and the output end of the stirring pump 31 faces the dissolving electric valve 32.

[0051] The liquid outlet pipe 123 is connected to the first liquid outlet 121 and the stirring liquid inlet 211; the liquid suction circuit 1131 is connected to the liquid inlet pipe 113 and the stirring liquid inlet 212.

[0052] By further defining the specific characteristics of the raw material tank 1, the mixing tank 2, the mixing pump 31, the dissolving electric valve 32, and the different pipelines, it is possible to effectively ensure that reverse osmosis water enters the bottom of the raw material tank 1 from the mixing tank 2 through the inlet pipeline 113 to dissolve the dialysis dry powder. (See attached...) Figure 3 As shown, the stirring pump 31 and the dissolving electric valve 32 are turned on. Through the accelerated pressurization of the stirring pump 31, reverse osmosis water enters the bottom of the raw material tank 1 from the stirring tank 2 via the inlet pipe 113, mixing and dissolving with the dialysis dry powder to form a solution. When the solution in the chamber of the raw material tank 1 accumulates to a certain level, that is, when the pressure inside and outside the raw material tank 1 is equal, the outlet pipe 123 returns to the stirring tank 2. The solution in the stirring tank 2 then enters the raw material tank 1 again via the inlet pipe 113, forming a large-scale circulation reflux to achieve basic dissolution of the dialysis dry powder. After the set dissolution time, the reflux stage begins, as shown in the attached diagram. Figure 4 As shown, the reflux assembly 4 is turned on and the dissolving electric valve 32 is turned off. The dissolved solution is refluxed through the outlet pipe 4, the inlet pipe 113, and the suction circuit 1131, and transferred as a whole to the stirring tank 2.

[0053] In a further preferred embodiment, the stirring assembly includes a second inlet pipe 52 and a stirring electric valve 51. The upper part of the stirring tank 2 is provided with a stirring inlet port 3 213. The second inlet pipe 52 is located inside the cavity of the stirring tank 2 and is connected to the stirring inlet port 3 213. The end 521 of the second inlet pipe is located near the bottom of the cavity of the stirring tank 2. The end 521 of the second inlet pipe has a second opening 522 with an opening area narrower than the cross-sectional area of ​​the cavity of the second inlet pipe 52.

[0054] The liquid inlet pipe 113 extends into a circulation stirring branch 1132 between the stirring pump 31 and the dissolving electric valve 32 and connects to the stirring inlet 313. The stirring electric valve 51 is connected to the circulation stirring branch 1132. An electrical conductivity detection module is installed inside the stirring tank 2 to detect whether the electrical conductivity of the solution in the stirring tank 2 reaches the set requirement after the stirring stage.

[0055] By further configuring the electric stirring valve 51, the circulating stirring branch 1132, the third liquid inlet 221, and the second liquid inlet pipe 52, as shown in the attached figure... Figure 5 As shown, by opening the electric stirring valve 51 and the stirring pump 31, and closing other valves, the solution can be transferred from the raw material tank 1 to the stirring tank 2 during the reflux stage and then enter the stirring stage. The second inlet pipe 52, the circulating stirring branch 1132, and the inlet pipe 113 form a self-circulating loop from the bottom of the stirring tank 2 to the connecting section of the circulating stirring branch 1132. The pressure in the self-circulating loop is continuous and uninterrupted, so there is no excessive pressure loss in between, and high pressure can be maintained throughout the process. This promotes the complete dissolution of the mixture that was not completely dissolved after being suspended in the closed pipe, as well as the small amount of undissolved mixture remaining on the inner wall of the stirring tank 1. Furthermore, through the accelerated pressurization of the stirring pump 31, the flow rate of the solution increases after flowing through the narrow second opening 522 of the second inlet pipe 52, and at the same time, a larger pressure is applied, which makes the solution quickly stirred and dissolved evenly. The shape of the second opening 522 is not limited, such as a regular shape or an irregular shape, and is not limited to slits, square holes, round holes, etc. At the same time, the larger the ratio of the cross-sectional area of ​​the second inlet pipe 52 cavity to the opening area of ​​the second opening 522, the greater the pressure formed on the solution in the cavity of the second inlet pipe 52, and the more it can promote the dissolution of undissolved mixtures. Therefore, those skilled in the art can adjust this ratio accordingly to obtain a solution that meets the quality requirements.

[0056] The end 521 of the second inlet pipe is preferably spherical in shape, which helps to make the fluid flow smoothly and avoid accumulation. Preferably, the bottom of the mixing tank 2 is a basic cone with the top facing down, and the top of the cone is set as the mixing outlet 221, which helps to empty the mixing tank 2 and avoid residue.

[0057] In a further preferred embodiment, as shown in the appendix Figure 1 As shown, a first opening 1122, smaller in area than the cross-sectional area of ​​the first inlet pipe 112, is formed at the end 1121 of the first inlet pipe. The narrow opening at the end 1121 of the first inlet pipe creates greater pressure on the solution within the pipe, aiding in the dissolution of the dialysis powder. Since the large circulation loop relies primarily on the accelerated pressurization by the stirring pump 31 and the balance of atmospheric pressure, and because there are intermittent events in the large circulation loop causing some pressure loss, the pressure inside the first inlet pipe 112 is lower than the pressure in the second inlet pipe 52. Therefore, the solution dissolves more thoroughly during the stirring phase than during the dissolution phase. Specifically, when the opening position of the first opening 1122 is set to facilitate the formation of circulation, it is more conducive to the rapid and uniform dissolution of the dialysis powder.

[0058] In a specific embodiment, the raw material barrel 1 is packaged with dialysis A powder of a fixed specification through the production line filling method. In some embodiments, such as 30 doses, 50 doses, 80 doses, etc., it will not be listed exhaustively here.

[0059] In a preferred embodiment, as shown in the appendix Figure 2 As shown, the liquid suction circuit 1131 includes a first liquid suction branch 11311 and a second liquid suction branch 11312. The reflux assembly 4 includes a pressure booster 41, a first reflux electric valve 42 and a second reflux electric valve 43. The inlet pipe 113 between the stirring pump 31 and the dissolving electric valve 32 extends to the first liquid suction branch 11311 and connects to the stirring inlet 212. The pressure booster 41 and the first reflux electric valve 42 are connected sequentially from the inlet pipe 113 to the stirring inlet 212. The dissolving electric valve 32 and the second reflux electric valve 43 are connected in parallel to the inlet pipe 113. The parallel branch formed by the connection of the inlet pipe 113 and the second reflux electric valve 43 is the second liquid suction branch 11312.

[0060] By setting the first liquid suction branch 11311 and the second liquid suction branch 11312 at corresponding positions, and the first reflux electric valve 42 and the pressure booster 41 on the first liquid suction branch 11311, and the second reflux electric valve 43 on the second liquid suction branch 11312, the preferred reflux assembly 4 and the liquid suction circuit 1131 are arranged on the large loop circulation, which can effectively use pressure to drain the solution in the raw material tank 1 and return it to the stirring tank 2. The pressure booster 41 is preferably a Venturi pressure booster.

[0061] In one specific embodiment, the second inlet pipe 52 has a second inlet pipe end 521, as shown in the attached figure. Figure 6 As shown.

[0062] In a preferred embodiment, the second liquid inlet pipe 52 extends from the bottom of the mixing tank 2 chamber toward the tank wall in several branches. The ends of the branches are the ends of the second liquid inlet pipe 521. The ends of the second liquid inlet pipe 521 are close to the tank wall and have corresponding second openings 522, so that a circulation is formed in the mixing tank 2 chamber in the working state.

[0063] Multiple streams of water ejected from the secondary openings form a circulation and then rapidly converge to create a vortex, improving the mixing and dissolving efficiency within the mixing tank 2, as shown in the attached diagram. Figure 2 and attached Figure 8 As shown. In a further preferred embodiment, the second inlet pipe 52 is inverted T-shaped, and the two second openings 522 are distributed in opposite directions at 180°, as shown in the attached figure. Figure 2 and attached Figure 7 As shown.

[0064] In a preferred embodiment, as shown in the appendix Figure 9As shown, the raw material tank 1 has a top plate 11, on which a first liquid inlet 111 and a first liquid outlet 121 are provided. Both the first liquid inlet 111 and the first liquid outlet 121 are threadedly connected to the water tank connector 14, and a sealing gasket 15 is provided around the threaded contact position. The upper end of the water tank connector 14 is threadedly connected to the quick connector 13. This preferred embodiment provides a sealing structure for the raw material tank 1. Simply inserting the liquid inlet pipe 113 and the liquid outlet pipe 123 into the quick connector 13 forms a closed loop, which is convenient and simple to operate. In a specific embodiment, the lower end of the water tank connector 14 is connected to the first liquid inlet pipe 112 corresponding to the first liquid inlet 111; in another specific embodiment, the lower end of the water tank connector 14 is connected to the liquid outlet pipe 122 corresponding to the first liquid outlet 121. Specifically, the connection can be made by a known method such as bonding with special adhesive. At the same time, in order to achieve waterproof performance, when choosing the threaded connection method, PTFE tape can usually be used at the same time to assist in sealing and waterproofing.

[0065] In a specific embodiment, the liquid outlet pipe 122, the first liquid inlet pipe 112, and the second liquid inlet pipe 52 are made of UPVC material. Specifically, the liquid inlet pipe 113 and the liquid outlet pipe 123 are made of flexible tubing and can be locked to the quick connector 13 with clamps to achieve a tight and waterproof seal.

[0066] In a preferred embodiment, the raw material tank 1 and / or the mixing tank 2 are equipped with movable parts. This further technical solution facilitates the transportation and spatial movement of the liquid preparation module. In a specific embodiment, the movable part of the raw material tank 1 is a trolley equipped with wheels, as shown in the attached figure. Figure 2 As shown; in another specific embodiment, rollers are provided at the bottom of the mixing tank 2, and the rollers are preferably fuma rollers.

[0067] Preferably, the stirring tank 2 is equipped with a graduated window for observing the solution volume. This further technical solution facilitates the viewing of the remaining solution in the stirring tank 2.

[0068] Another aspect of this application proposes a centralized system for supplying concentrated dialysate, employing a solution preparation module as described in any of the aforementioned schemes. This provides the corresponding beneficial effects of the aforementioned schemes, which will not be elaborated upon here.

[0069] In a preferred embodiment, the centralized supply system for concentrated dialysate includes a storage module, a dispensing module connected to the storage module 6, and the dispensing module outputs the prepared solution to the storage module 6, as shown in the attached figure. Figure 10 As shown. The liquid storage module 6 is used to store concentrated solutions that meet medical requirements after dissolution and stirring, and to supply them to the dialysis device as needed. In one specific embodiment, the liquid storage module 6 is connected to the stirring tank 2 in the liquid preparation module.

[0070] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A solution preparation module, including a mixing tank (2) connected to reverse osmosis water, the mixing tank (2) being connected to... The stirring assembly (3) is characterized in that, Also includes: The raw material container (1) containing pre-packaged dialysis dry powder, the inlet pipe (113), the outlet pipe (123), and the suction pipe Liquid circuit (1131) and reflux assembly (4). The liquid inlet pipe (113) connects the stirring tank (2) and the raw material tank (1), so that the reverse osmosis water can enter the raw material tank (1) from the stirring tank (2) under pressure to form a solution; The liquid outlet pipe (123) connects the stirring tank (2) and the raw material tank (1), so that the solution enters the stirring tank (2) after the atmospheric pressure balance is formed in the raw material tank (1). The liquid suction circuit (1131) connects the liquid inlet pipe (113) and the stirring tank (2), and the liquid suction circuit (1131) connects the reflux assembly (4) so ​​that the dissolved solution flows back from the raw material tank (1) to the stirring tank (2) under pressure.

2. The solution preparation module as described in claim 1, characterized in that, The upper part of the raw material barrel (1) is provided with a first liquid inlet (111) and a first liquid outlet (121). The inside of the raw material barrel (1) is a liquid outlet pipe (122) connected to the first liquid outlet (121) and a first liquid inlet pipe (112) connected to the first liquid inlet (111). The end of the liquid outlet pipe (1221) and the end of the first liquid inlet pipe (1121) are located near the bottom of the cavity of the raw material barrel (1). The upper part of the mixing tank (2) is provided with a mixing inlet 1 (211) and a mixing inlet 2 (212), and the bottom of the mixing tank (2) is provided with a mixing outlet (221). The liquid inlet pipe (113) connects the first liquid inlet (111) and the stirring outlet (221). The liquid inlet pipe (113) connects the stirring pump (31) and the dissolving electric valve (32). The stirring pump (31) is located near the stirring tank (2). The input end of the stirring pump (31) faces the stirring tank (2), and the output end of the stirring pump (31) faces the dissolving electric valve (32). The liquid outlet pipe (123) is connected to the first liquid outlet (121) and the stirring liquid inlet (211). The liquid suction circuit (1131) connects the liquid inlet pipe (113) and the stirring liquid inlet (212).

3. The solution preparation module as described in claim 2, characterized in that, include: The stirring assembly (3) includes a second inlet pipe (52) and a stirring electric valve (51). The upper part of the stirring tank (2) is provided with a stirring inlet three (213). The second inlet pipe (52) is located in the cavity of the stirring tank (2) and is connected to the stirring inlet three (213). The end of the second inlet pipe (521) is located near the bottom of the cavity of the stirring tank (2). The end of the second inlet pipe (521) has a second opening (522) with an opening area narrower than the cross-sectional area of ​​the cavity of the second inlet pipe (52). The liquid inlet pipe (113) extends a circulating stirring branch (1132) between the stirring pump (31) and the dissolving electric valve (32) and connects to the stirring inlet three (213). The stirring electric valve (51) is connected to the circulating stirring branch (1132). An electrical conductivity detection module is installed inside the stirring tank (2).

4. The solution preparation module as described in claim 3, characterized in that, A first opening (1122) with an opening area smaller than the cross-sectional area of ​​the first inlet pipe (112) is provided at the end of the first inlet pipe (1121).

5. The solution preparation module as described in claim 4, characterized in that, The first liquid inlet tube end (1121) and the second liquid inlet tube end (521) are spherical ends, and the first opening (1122) and the second opening (522) are both small holes.

6. The solution preparation module as described in any one of claims 3 to 5, characterized in that, The second liquid inlet pipe (52) extends several branch pipes from near the bottom of the mixing tank (2) towards the tank wall. The end of the branch pipe is the end of the second liquid inlet pipe (521). Several ends of the second liquid inlet pipe (521) are close to the tank wall and correspondingly open the second opening (522) so that a circulation is formed in the mixing tank (2) in the working state.

7. The solution preparation module as described in claim 6, characterized in that, The second inlet pipe (52) is inverted T-shaped, and the two second openings (522) are distributed in opposite directions at 180°.

8. The solution preparation module as described in claim 2, characterized in that, The liquid suction circuit (1131) includes a first liquid suction branch (11311) and a second liquid suction branch (11312). The reflux assembly (4) includes a pressure booster (41), a first reflux electric valve (42), and a second reflux electric valve (43). The liquid inlet pipe (113) between the stirring pump (31) and the dissolving electric valve (32) extends out of the first liquid suction branch (11311) and connects to the stirring inlet port (212). The branch (11311) is connected sequentially from the liquid inlet pipe (113) to the stirring liquid inlet port (212) to the pressure booster (41) and the first reflux electric valve (42). The dissolving electric valve (32) and the second reflux electric valve (43) are connected in parallel to the liquid inlet pipe (113). The parallel branch formed by the liquid inlet pipe (113) and the second reflux electric valve (43) is the second liquid suction branch (11312).

9. The solution preparation module as described in claim 2, characterized in that, The raw material tank (1) has a top plate (11), on which the first liquid inlet (111) and the first liquid outlet (121) are provided. The first liquid inlet (111) and the first liquid outlet (121) are both threadedly connected to the water tank connector (14) and a sealing gasket (15) is provided around the threaded contact position. The upper end of the water tank connector (14) is threadedly connected to the quick connector (13).

10. A centralized system for supplying concentrated dialysate, comprising a storage module (6), characterized in that, The solution preparation module as described in any one of claims 1 to 9 is used, the solution preparation module is connected to the liquid storage module (6), and the solution preparation module outputs the prepared solution to the liquid storage module (6).

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