Pretreatment disinfection device for water for injection

Abstract

The utility model relates to the technical field of water disinfection, in particular to a pretreatment disinfection device for injection water. According to the pretreatment and disinfection device for the water for injection, a raw water tank is provided with a liquid inlet formed in the upper part of the raw water tank and a liquid outlet formed in the lower part of the raw water tank, and a first pipeline is connected in series with a primary filter, a softener and a secondary filter after flowing through the liquid inlet and the liquid outlet; the first pipeline is used for introducing water in the raw water tank into the primary filter, the softener and the secondary filter and finally reflowing to the raw water tank. During use, water circularly flowing in the first pipeline is gradually heated to a pasteurization temperature through the heat exchanger, and hot water flows through the primary filter, the softener and the secondary filter through the first pipeline and finally flows back to the raw water tank, so that the whole device is pasteurized regularly, the cleanliness of the whole device is improved, and the service life of the whole device is prolonged. Therefore, the pretreatment disinfection effect on the raw water is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water disinfection, in particular to a pretreatment disinfection device for injection water. Background Art

[0002] Water for injection is a special type of water used primarily in the pharmaceutical and medical fields, especially in the preparation of injections and sterile medicines.

[0003] Disinfection of water for injection (WFI) is a crucial step in the pharmaceutical and medical fields. Its purpose is to ensure that WFI is sterile, preventing contamination by pathogens such as bacteria and viruses, thereby ensuring patient safety. WFI disinfection involves pretreatment and final treatment. The final treatment typically involves passing the water through a reverse osmosis (RO) membrane and an electroion exchange (EDI) system.

[0004] Among them, the existing injection water pretreatment and disinfection devices usually only disinfect some internal components such as activated carbon filters during pretreatment and disinfection, and cannot take into account the entire device. As a result, the single disinfection of injection water during use is not thorough enough, and multiple repeated disinfections are required to meet the use requirements, which is costly. Utility Model Content

[0005] The purpose of the utility model is to provide a device for pre-treating and disinfecting water for injection, so as to improve the pre-treating and disinfecting effect of water for injection.

[0006] In order to solve the above technical problems, the utility model provides a device for pretreatment and disinfection of water for injection.

[0007] The present invention provides a pretreatment and disinfection device for water for injection, comprising a raw water tank, a primary filter, a softener, a secondary filter, a first pipeline, a second pipeline, and a heat exchanger. The second pipeline exchanges heat with the first pipeline through the heat exchanger to heat the water in the first pipeline to a pasteurization temperature.

[0008] The raw water tank has a liquid inlet provided at the upper portion of the raw water tank and a liquid outlet provided at the lower portion of the raw water tank, and the first pipeline flows through the liquid inlet and the liquid outlet and is connected in series to the primary filter, the softener and the secondary filter;

[0009] The first pipeline is used to introduce the water in the raw water tank into the primary filter, the softener and the secondary filter and finally flow back to the raw water tank.

[0010] Furthermore, the first pipeline is provided with a pressure boosting device, and the pressure boosting device is located between the liquid outlet and the primary filter.

[0011] Furthermore, the boosting device includes a raw water pump and a first pressure gauge arranged downstream of the raw water pump, and the raw water pump is a centrifugal pump.

[0012] Furthermore, the softener is located upstream of the secondary filter.

[0013] Furthermore, the softener includes a first softener and a second softener connected in series.

[0014] Furthermore, the softener is a resin softener.

[0015] Furthermore, the primary filter is a quartz sand filter.

[0016] Furthermore, the secondary filter is an activated carbon filter.

[0017] Furthermore, the raw water tank includes a tank body and a tank cover, the tank cover is arranged at the opening of the tank body, the liquid inlet is arranged on the tank cover, and the liquid outlet is located at the bottom of the tank body.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] When the WFI system of this utility model is used to treat water, the primary filter, softener, and secondary filter disinfect the raw water in real time. At set intervals, hot water is introduced into the second pipeline, gradually heating the water circulating in the first pipeline to the pasteurization temperature via the heat exchanger. The hot water then flows through the first pipeline, passing through the primary filter, softener, and secondary filter before ultimately returning to the raw water tank. This regularly pasteurizes the entire system, improving its cleanliness and, consequently, the effectiveness of the WFI pretreatment and disinfection system on raw water. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the injection water pretreatment and disinfection device of the present invention;

[0021] Reference numerals:

[0022] 10. Raw water tank; 11. Tank body; 12. Tank cover;

[0023] 20. Primary filter;

[0024] 31. First softener; 32. Second softener;

[0025] 40. Secondary filter;

[0026] 50. First pipeline; 51. First pressure gauge; 52. Sampling point; 53. Temperature sensor; 54. Pneumatic butterfly valve; 55. Second pressure gauge; 56. Third pressure gauge; 57. Fourth pressure gauge;

[0027] 60. Second pipeline; 61. Pneumatic angle seat valve;

[0028] 70. Heat exchanger;

[0029] 80. Raw water pump. DETAILED DESCRIPTION

[0030] The following description of the injection water pretreatment disinfection device of the present invention is provided in conjunction with a schematic diagram, which shows a preferred embodiment of the present invention. It should be understood that those skilled in the art may modify the present invention described herein while still achieving the beneficial effects of the present invention. Therefore, the following description should be understood as being generally known to those skilled in the art and not as limiting the present invention.

[0031] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present utility model, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0032] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0033] In this application, unless otherwise specified or limited, the term "connection" should be understood broadly. For example, "connection" can refer to fixed connection, detachable connection, or integration; it can refer to direct connection or indirect connection through an intermediate medium. In addition, the term "electrical connection" can refer to direct electrical connection or indirect electrical connection through an intermediate medium.

[0034] The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0035] The following is attached with the instruction manual Figure 1 , the injection water pretreatment disinfection device of the utility model is introduced.

[0036] In one embodiment, the injection water pretreatment disinfection device includes a raw water tank 10, a primary filter 20, a softener, a secondary filter 40, a first pipeline 50, a second pipeline 60 and a heat exchanger 70. The second pipeline 60 exchanges heat with the first pipeline 50 through the heat exchanger 70 to heat the water in the first pipeline 50 to a pasteurization temperature.

[0037] The raw water tank 10 has a liquid inlet disposed at the upper portion of the raw water tank 10 and a liquid outlet disposed at the lower portion of the raw water tank 10 . The first pipeline 50 flows through the liquid inlet and the liquid outlet and then connects the primary filter 20 , the softener and the secondary filter 40 in series.

[0038] The first pipeline 50 is used to introduce the water in the raw water tank 10 into the primary filter 20 , the softener, and the secondary filter 40 and finally return the water to the raw water tank 10 .

[0039] When the WFI system of the present invention is used to treat water, the primary filter 20, softener, and secondary filter 40 disinfect the raw water in real time. At set intervals, hot water is introduced into the second pipeline 60, gradually heating the water circulating in the first pipeline 50 to the pasteurization temperature via the heat exchanger 70. The hot water then flows through the first pipeline 50, through the primary filter 20, softener, and secondary filter 40, and ultimately returns to the raw water tank 10. This regularly pasteurizes the entire system, improving its cleanliness and, in turn, enhancing the WFI pretreatment and disinfection effectiveness of the system.

[0040] Wherein, the primary filter 20 is used to remove physical impurities such as suspended matter, silt and fine particles contained in the raw water, which helps to improve the clarity and overall water quality of the water, and can also prevent larger particles from entering subsequent treatment equipment (such as softeners and secondary filters 40), thereby extending the service life of subsequent treatment equipment and reducing maintenance costs. Preferably, the primary filter 20 can be a quartz sand filter. In other embodiments, the primary filter 20 can also be a bag filter or a mesh filter, and the bag filter is a bag made of fibers or synthetic materials with various pore sizes, which can intercept larger particles, and the mesh filter is made of metal mesh or plastic mesh with different mesh sizes, which can filter larger particles and suspended matter.

[0041] The secondary filter 40 is used to adsorb odors, pigments, free chlorine and chlorides in the raw water, and protect subsequent membrane treatment equipment (such as reverse osmosis membranes) from the oxidizing effect of chlorine. Preferably, the secondary filter 40 is an activated carbon filter. The activated carbon filter has a strong adsorption capacity. In addition to adsorbing odors, pigments, free chlorine and chlorides in the raw water, it can also effectively remove organic matter in the water, including humic acid, fulvic acid, certain dyes, pesticides, synthetic detergents and other organic compounds. In other embodiments, the secondary filter 40 can also be a carbon sand filter. This type of filter combines the functions of activated carbon and sand filtration and has a better filtering effect.

[0042] In one embodiment, sampling points 52 and temperature sensors 53 are provided at multiple positions of the first pipeline 50. The sampling points 52 are used to sample water at different positions in the entire device to timely understand the quality of water at different positions. The temperature sensor 53 is used to measure the water temperature in the first pipeline 50.

[0043] In one embodiment, a plurality of pneumatic butterfly valves 54 are provided on the first pipeline 50 to control the opening and closing of different positions of the first pipeline 50 , and a plurality of pneumatic angle seat valves 61 are provided in the second pipeline 60 to control the opening and closing of different positions of the second pipeline 60 .

[0044] In one embodiment, to ensure sufficient water flow from the raw water tank 10 downstream, the first pipeline 50 is equipped with a pressure boosting device located between the liquid outlet and the primary filter 20. Specifically, the pressure boosting device includes a raw water pump 80 and a first pressure gauge 51 located downstream of the raw water pump 80. The raw water pump 80 is located in the portion of the first pipeline 50 adjacent to the liquid outlet of the raw water tank 10. The raw water pump 80 pumps liquid from the raw water tank 10 and delivers it to the primary filter 20, softener, and secondary filter 40, allowing the water to circulate within the first pipeline. The first pressure gauge 51 measures the water pressure in the corresponding portion of the first pipeline 50 between the raw water pump 80 and the primary filter 20. Preferably, the raw water pump 80 is a centrifugal pump, but other types of pumps are also acceptable.

[0045] In one embodiment, the softener is disposed upstream of the secondary filter 40. The softener can first remove hardness ions, such as calcium and magnesium ions, thereby preventing the hardness ions from forming precipitation on the reverse osmosis membrane during the subsequent fine treatment and disinfection process, thereby affecting the service life and efficiency of the reverse osmosis membrane. It can also protect subsequent water treatment equipment from scaling.

[0046] In one embodiment, the softener is preferably a resin softener. The resin softener operates through an ion exchange process. Resin is typically a synthetic material with exchangeable sodium ions. When water containing hardness ions passes through the resin, calcium and magnesium ions in the water exchange with sodium ions on the resin, removing the hardness ions and releasing sodium ions. Resin softeners can efficiently remove hardness ions from water, are relatively simple to operate, and have low maintenance costs.

[0047] In one embodiment, in order to improve the softening effect of raw water, a multi-stage softening method is adopted in this embodiment. Specifically, the softener includes a first softener 31 and a second softener 32 connected in series. The second softener 32 can perform secondary softening on the raw water flowing through the first softener 31, thereby improving the softening effect.

[0048] A second pressure gauge 55 is provided between the primary filter 20 and the first softener 31. The second pressure gauge 55 is used to measure the water pressure in the corresponding portion of the first pipeline 50 between the primary filter 20 and the first softener 31. A third pressure gauge 56 is provided between the first softener 31 and the second softener 32. The third pressure gauge 56 is used to measure the water pressure in the corresponding portion of the first pipeline 50 between the first softener 31 and the second softener 32. A fourth pressure gauge 57 is provided between the second softener 32 and the secondary filter 40. The fourth pressure gauge 57 is used to measure the water pressure in the corresponding portion of the first pipeline 50 between the second softener 32 and the secondary filter 40. In one embodiment, as shown in the figure, the raw water tank 10 includes a tank body 11 and a tank cover 12. The tank cover 12 is provided at the opening of the tank body 11 to seal the tank body 11. The liquid inlet is provided on the tank cover 12, and the liquid outlet is located at the bottom of the tank body 11. In order to ensure sealing, a sealing ring is provided between the box body 11 and the box cover 12 for sealing.

[0049] Preferably, the liquid outlet is located at the bottom of the box body 11, which is conducive to promoting thorough drainage, reducing the possibility of residual water, and preventing scale accumulation and microbial generation; on the other hand, it can save design space and is conducive to miniaturization of the device.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for pretreatment and disinfection of water for injection, characterized in that: The system comprises a raw water tank, a primary filter, a softener, a secondary filter, a first pipeline, a second pipeline and a heat exchanger, wherein the second pipeline exchanges heat with the first pipeline through the heat exchanger to heat the water in the first pipeline to a pasteurization temperature; The raw water tank has a liquid inlet provided at the upper portion of the raw water tank and a liquid outlet provided at the lower portion of the raw water tank, and the first pipeline flows through the liquid inlet and the liquid outlet and is connected in series to the primary filter, the softener and the secondary filter; The first pipeline is used to introduce the water in the raw water tank into the primary filter, the softener and the secondary filter and finally flow back to the raw water tank.

2. The injection water pretreatment disinfection device according to claim 1, characterized in that: The first pipeline is provided with a pressure boosting device, and the pressure boosting device is located between the liquid outlet and the primary filter.

3. The injection water pretreatment disinfection device according to claim 2, characterized in that: The boosting device includes a raw water pump and a first pressure gauge arranged downstream of the raw water pump, and the raw water pump is a centrifugal pump.

4. The injection water pretreatment disinfection device according to claim 1, characterized in that: The softener is located upstream of the secondary filter.

5. The injection water pretreatment disinfection device according to claim 4, characterized in that: The softener includes a first softener and a second softener connected in series.

6. The injection water pretreatment disinfection device according to any one of claims 1 to 5, characterized in that: The softener is a resin softener.

7. The injection water pretreatment disinfection device according to any one of claims 1 to 5, characterized in that: The primary filter is a quartz sand filter.

8. The injection water pretreatment disinfection device according to any one of claims 1 to 5, characterized in that: The secondary filter is an activated carbon filter.

9. The injection water pretreatment disinfection device according to any one of claims 1 to 5, characterized in that: The raw water tank comprises a tank body and a tank cover, wherein the tank cover is arranged at the opening of the tank body, the liquid inlet is arranged on the tank cover, and the liquid outlet is located at the bottom of the tank body.

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