Preparation device of medical purified water

Abstract

The utility model provides a medical purified water preparation device, which relates to the technical field of purified water preparation and comprises a raw water tank, a water outlet of the raw water tank is connected with a water pump, and a water outlet of the water pump is connected with an integrated filter. A water outlet of the integrated filter is sequentially connected with an ultrafiltration assembly, a reverse osmosis assembly, an EDI assembly, a pipeline type ultraviolet sterilizer and a purified water storage tank, and three filter material boxes are arranged in the integrated filter. According to the utility model, the integrated filter, ultrafiltration, reverse osmosis, EDI and other multi-stage filtration and treatment processes are adopted, and meanwhile, the pipeline type ultraviolet sterilizer is adopted for sterilization and disinfection, so that the device has the advantages of high sterilization efficiency, no secondary pollution and the like, can effectively remove various impurities, ions, bacteria, viruses and the like in water, can effectively ensure the microbial safety of purified water, and is suitable for popularization and application. And the prepared high-purity medical purified water meets the strict requirements of the medical industry on the water quality.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to the purified water preparation technical field, concretely relates to a preparation device of medical purified water. BACKGROUND

[0002] In the medical industry, the quality of purified water is the cornerstone of ensuring the smooth development of medical work and patient safety, which plays an indispensable role in drug production, medical instrument cleaning and blood dialysis and other key processes. In the field of drug production, any slight water quality defect, such as the presence of impurities or microorganisms, may interfere with the chemical stability of the drug, causing drug efficacy fluctuations, and even causing serious toxic side effects. In the medical instrument cleaning process, if the purified water used is not pure enough, the residual pollutants may become a potential source of cross infection in subsequent use, seriously threatening patient health.

[0003] Current medical purified water preparation technology faces many challenges. Traditional single-stage filtration equipment has limited functions and can only initially intercept larger particulate impurities. It is difficult to effectively remove small and harmful pollutants such as bacteria, viruses, dissolved salts and organic matter, which is far from the increasingly stringent medical purified water quality standards. Some preparation devices using simple ion exchange resin have certain effect in reducing water hardness, but they are not capable of dealing with microorganisms and complex impurities, and frequent resin regeneration operations not only consume manpower and resources, but also increase operating costs. In terms of sterilization, some traditional processes rely too much on chemical agents, which not only easily leaves chemical residues in purified water, polluting the water quality, but also has a negative impact on the ecological environment. The existing devices have significant defects in filter replacement, and most devices require large-scale disassembly of the entire filtration system for filter replacement, which is complex and time-consuming, resulting in long-term downtime of the equipment and seriously affecting the stable supply of medical water. SUMMARY

[0004] 1. The technical problem to be solved by the utility model:

[0005] The utility model provides a preparation device of medical purified water to solve the technical problems in the above background technology.

[0006] 2. Technical scheme:

[0007] To achieve the above purpose, the technical scheme provided by the utility model is: a preparation device of medical purified water, comprising a raw water tank, the water outlet of the raw water tank is connected with a water pump, the water outlet of the water pump is connected with an integrated filter, the water outlet of the integrated filter is sequentially connected with an ultrafiltration assembly, a reverse osmosis assembly, an EDI assembly, a pipeline type ultraviolet sterilizer and a purified water storage tank, and three filter boxes are arranged in the integrated filter.

[0008] Preferably, the integrated filter comprises a tank body, the upper end of the tank body is provided with a water inlet, the lower end of the tank body is provided with a water outlet, three porous plates are arranged in the tank body, and the three porous plates divide the tank body into three cavities for placing the filter material boxes.

[0009] Preferably, a water distribution plate is further arranged in the tank body, a water inlet cavity is formed between the water distribution plate and the water inlet, and a plurality of water distribution holes are uniformly arranged on the water distribution plate.

[0010] Preferably, the filter material box comprises a box body, detachable covers are arranged at the upper end and the lower end of the box body, a filter screen is arranged on the cover, external threads are arranged at the upper end and the lower end of the box body, and internal threads matched with the external threads are arranged on the cover.

[0011] Preferably, the three cavities are a multi-medium filtration cavity, an activated carbon adsorption cavity and a softening resin cavity from top to bottom, quartz sand and anthracite are arranged in the filter material box in the multi-medium filtration cavity, coconut activated carbon is arranged in the filter material box in the activated carbon adsorption cavity, and softening resin is arranged in the filter material box in the softening resin cavity.

[0012] 3. Beneficial effects:

[0013] Compared with the prior art, the technical scheme has the following beneficial effects:

[0014] The integrated filter, the multi-stage filtration and treatment process of ultrafiltration, reverse osmosis and EDI, and the pipeline type ultraviolet sterilizer for sterilization and disinfection have the advantages of high sterilization efficiency, no secondary pollution and the like, can effectively remove various impurities, ions, bacteria and viruses and the like in water, can effectively ensure the microbial safety of purified water, can prepare high-purity medical purified water, and can meet the strict requirements of the medical industry on water quality.

[0015] The integrated filter integrates the three functions of multi-medium filtration, activated carbon adsorption and softening resin softening, reduces equipment floor area, simplifies system structure and reduces installation and maintenance costs. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is whole structure schematic diagram of the utility model;

[0017] Fig. 2 It is another angle whole structure schematic diagram of the utility model;

[0018] Fig. 3 It is integrated filter external structure schematic diagram of the utility model;

[0019] Fig. 4 It is integrated filter internal structure schematic diagram of the utility model;

[0020] Fig. 5 It is perforated plate structure schematic diagram of the utility model;

[0021] Fig. 6 It is filter box structure schematic diagram of the utility model;

[0022] Fig. 7 It is filter box internal structure schematic diagram of the utility model.

[0023] REFERENCE SIGNS:

[0024] 1, raw water tank; 2, water pump; 3, integrated filter; 31, tank body; 32, water inlet; 33, water outlet; 34, perforated plate; 35, water distribution plate; 36, water inlet cavity; 4, ultrafiltration assembly; 5, reverse osmosis assembly; 6, EDI assembly; 7, pipeline type ultraviolet sterilizer; 8, purified water storage tank; 9, filter material box; 91, box body; 92, cover body; 93, filter screen; 94, external thread; 95, internal thread. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings, wherein several embodiments of the present application are given. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description. Therefore, it cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0027] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0028] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing", "provided with" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] It should be noted that the structures not introduced in the utility model do not involve the design points and improvement direction of the utility model, are same as the prior art or can be realized by using the prior art, and details are not described herein. Embodiments

[0030] Refer to the attached Figs. 1-7 A medical purified water preparation device, comprising a raw water tank 1, the water outlet of the raw water tank 1 is connected with a water pump 2, the water outlet of the water pump 2 is connected with an integrated filter 3, the water outlet of the integrated filter 3 is sequentially connected with an ultrafiltration assembly 4, a reverse osmosis assembly 5, an EDI assembly 6, a pipeline type ultraviolet sterilizer 7 and a purified water storage tank 8, and three filter material boxes 9 are arranged in the integrated filter 3.

[0031] The integrated filter 3 comprises a tank body 31, the upper end of the tank body 31 is provided with a water inlet 32, the lower end of the tank body 31 is provided with a water outlet 33, three porous plates 34 are arranged in the tank body 31, and the tank body 31 is divided into three cavities for placing the filter material boxes 9 by the three porous plates 34.

[0032] A water distribution plate 35 is further arranged in the tank body 31, a water inlet cavity 36 is formed between the water distribution plate 35 and the water inlet 32, and a plurality of water distribution holes are uniformly arranged on the water distribution plate 35.

[0033] The filter material box 9 comprises a box body 91, cover bodies 92 are detachably arranged at the upper and lower ends of the box body 91, a filter screen 93 is arranged on the cover body 92, outer threads 94 are arranged at the upper and lower ends of the box body 91, and inner threads 95 matched with the outer threads 94 are arranged on the cover body 92.

[0034] The three cavities are sequentially a multi-medium filtration cavity, an activated carbon adsorption cavity and a softening resin cavity from top to bottom, quartz sand and anthracite are arranged in the filter material box 9 in the multi-medium filtration cavity, coconut activated carbon is arranged in the filter material box 9 in the activated carbon adsorption cavity, and softening resin is arranged in the filter material box 9 in the softening resin cavity.

[0035] Working principle

[0036] Raw water storage and transportation: raw water first flows into the raw water tank 1 for storage. The raw water tank serves to provide a stable water source to ensure the continuity of the subsequent preparation process.

[0037] After the water pump 2 is started, the rotation of the impeller generates suction force to extract the raw water in the raw water tank 1 and transport it to the integrated filter 3 through the pipeline at a certain pressure. The pressure control of the water pump is crucial, which needs to be adjusted according to the flow and resistance characteristics of the entire system to ensure that the raw water can enter the subsequent treatment unit at a suitable flow rate.

[0038] Multi-medium filtration: Raw water enters the tank body 31 from the water inlet 32 of the integrated filter 3. The design of the water inlet usually takes into account the uniform distribution of water flow to avoid excessive or insufficient local water flow, which affects the filtration effect.

[0039] After entering the tank body, the raw water reaches the water distribution plate 35. The evenly distributed water distribution holes on the water distribution plate allow the raw water to flow uniformly downward into the multi-medium filtration chamber. This uniform water distribution ensures that the filter material in the multi-medium filtration chamber can fully play its role and avoid dead angles in filtration.

[0040] The filter material box 9 in the multi-medium filtration chamber is filled with quartz sand and anthracite. The particles of quartz sand are relatively small, mainly used to intercept finer impurities, while anthracite has a high porosity and can adsorb some organic matter and part of colloidal substances. When the raw water passes through the filtration layer of quartz sand and anthracite, large particles of impurities are first intercepted by anthracite, and as the water flow penetrates further, small particles and part of colloids are intercepted by quartz sand, thereby achieving preliminary filtration of raw water and significantly reducing water turbidity.

[0041] Activated carbon adsorption: After multi-medium filtration, the water enters the activated carbon adsorption chamber. Activated carbon has a highly developed pore structure and a large specific surface area, with strong adsorption capacity. Coconut shell activated carbon has special adsorption and chemical reaction capacity for residual chlorine in water, which can decompose residual chlorine into harmless chloride ions, thereby effectively removing residual chlorine. At the same time, it can also adsorb organic matter in water, such as humic acid, phenolic compounds, etc. If these organic matters are not removed, they may affect the performance of subsequent treatment units and even cause harm to human health. In addition, activated carbon can also remove odors in water, improving the taste of water.

[0042] Softening resin softening: After activated carbon adsorption, the water enters the softening resin chamber. Softening resin is a high molecular material with ion exchange function. The softening resin in the softening resin chamber contains exchangeable sodium ions (Na⁺). When water containing calcium, magnesium and other metal ions passes through the softening resin layer, the sodium ions in the resin exchange with the calcium and magnesium ions in the water, and the calcium and magnesium ions are adsorbed onto the resin, while the sodium ions enter the water, thereby removing calcium and magnesium ions in the water and reducing water hardness. After softening treatment, the water can effectively prevent pipe blockage and equipment scaling caused by precipitation of calcium and magnesium ions in the subsequent treatment process.

[0043] Ultrafiltration: The water treated by the integrated filter 3 enters the ultrafiltration assembly 4. The ultrafiltration assembly is usually composed of multiple ultrafiltration membrane elements, and the ultrafiltration membrane has a certain pore size range, generally between 0.01-0.1 microns. Water passes through the ultrafiltration membrane under pressure, and bacteria, viruses, colloids, and macromolecular organic matter in the water are retained on the surface of the membrane due to their large particle size, while water molecules and some small molecules pass through the ultrafiltration membrane smoothly, thereby achieving further purification of the water. The ultrafiltration process can effectively remove most of the microorganisms and macromolecular impurities in the water, reducing the microbial load of the water and providing better quality water for subsequent reverse osmosis treatment.

[0044] Reverse osmosis: The water after ultrafiltration enters the reverse osmosis assembly 5. The reverse osmosis assembly is one of the core components of the entire purified water preparation device, which uses the reverse osmosis principle of the semi-permeable membrane to remove small molecular impurities such as dissolved salts in water. During the reverse osmosis process, a certain pressure needs to be applied to the water, which is greater than the osmotic pressure, so that water molecules can overcome the osmotic pressure and permeate from the high-concentration solution (raw water) side to the low-concentration solution (product water) side through the semi-permeable membrane. While the salt, heavy metal ions, and small molecular organic matter in the water are retained by the semi-permeable membrane and cannot pass through, thereby achieving the purpose of desalination and removal of other small molecular impurities. The reverse osmosis membrane can remove more than 95% of the salt, significantly reducing the conductivity of the water and greatly improving the purity of the water.

[0045] EDI treatment: The water after reverse osmosis treatment enters the EDI assembly 6. The EDI (Electrodeionization) assembly combines the advantages of electrodialysis and ion exchange resin, achieving the function of deep desalination. In the EDI assembly, anion and cation exchange resins are filled between anode and cathode electrodes, forming multiple alternating fresh water chambers and concentrated water chambers. When direct current passes through the EDI assembly, anions and cations in the water move towards the anode and cathode electrodes under the action of the electric field, and at the same time, the ion exchange resin continuously adsorbs and releases the ions in the water, further removing the trace ions in the water, making the water resistivity reach a higher level, usually 15-18.2 MΩ・cm, meeting the strict requirements of medical purified water for resistivity.

[0046] Ultraviolet sterilization: The water treated by the EDI enters the pipeline ultraviolet sterilizer 7. The ultraviolet sterilizer uses ultraviolet light emitted by the ultraviolet lamp to irradiate the water. Ultraviolet light has high energy and can destroy the nucleic acid (DNA or RNA) structure of bacteria and viruses, making them lose the ability to reproduce and survive, thereby achieving the purpose of sterilization and disinfection. Ultraviolet sterilization has the advantages of fast sterilization speed, high efficiency, and no chemical residues, and can effectively kill the residual bacteria and viruses in the water, ensuring that the microbial indicators of the purified water meet the medical standards.

[0047] Storage: the purified water after sterilization treatment is stored in the purified water storage tank 8. The purified water storage tank is usually made of stainless steel and is equipped with corresponding liquid level control system, breather and other devices. The liquid level control system can monitor the water level in the storage tank in real time, ensure that the storage capacity can meet the demand of medical use, and prevent the water level from being too high or too low to affect the system. The breather is used to keep the pressure balance in the storage tank, and filter the air entering the tank to prevent microorganisms and impurities in the air from entering the tank and contaminating the purified water. The purified water stored in the purified water storage tank can be delivered to each use point through the pipeline according to the needs of medical equipment and medical process, and provide high-quality purified water for medical activities.

[0048] The above-described embodiments only express certain implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. An apparatus for the production of medical purified water, characterized in that: The utility model provides a kind of integrated filter, including raw water tank (1), the water outlet of the raw water tank (1) is connected with water pump (2), the water outlet of the water pump (2) is connected with integrated filter (3), the water outlet of the integrated filter (3) is sequentially connected with ultrafiltration assembly (4), reverse osmosis assembly (5), EDI assembly (6), pipeline type ultraviolet sterilizer (7) and purified water storage tank (8), three filter material boxes (9) are arranged in the integrated filter (3).

2. A device for the preparation of medical purified water according to claim 1, characterized in that: The integrated filter (3) includes tank body (31), the upper end of the tank body (31) is provided with water inlet (32), and the lower end is provided with water outlet (33), three perforated plates (34) are arranged in the tank body (31), and three perforated plates (34) separate the tank body (31) into three cavities for placing the filter material box (9).

3. A device for the preparation of medical purified water according to claim 2, characterized in that: The tank body (31) is also provided with water distribution plate (35), and water inlet cavity (36) is formed between the water distribution plate (35) and the water inlet (32), and a plurality of water distribution holes are uniformly arranged on the water distribution plate (35).

4. The apparatus for producing medical purified water according to claim 2, wherein: The filter material box (9) includes box body (91), and the upper and lower ends are detachably mounted with cover body (92), the cover body (92) is provided with filter screen (93), and the upper and lower ends of the box body (91) are provided with external thread (94), and the cover body (92) is provided with internal thread (95) matched with the external thread (94).

5. A device for the preparation of medical purified water according to claim 4, characterized in that: Three cavities are sequentially multi-medium filtration cavity, activated carbon adsorption cavity and softening resin cavity from top to bottom, quartz sand and anthratex are arranged in the filter material box (9) in the multi-medium filtration cavity, coconut shell activated carbon is arranged in the filter material box (9) in the activated carbon adsorption cavity, and softening resin is arranged in the filter material box (9) in the softening resin cavity.

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