Filtration system

Abstract

The utility model discloses a filtering system. The filtering system comprises a discharging tank, a receiving tank, a filter assembly and a first branch pipeline, the discharging tank is provided with a first accommodating cavity for accommodating liquid to be filtered; the receiving tank is provided with a second accommodating cavity for accommodating the filtered liquid; the filter assembly is connected between the discharging tank and the receiving tank through a pipeline, is communicated with the first accommodating cavity and the second accommodating cavity, and is used for filtering liquid; the inlet end of the first branch pipeline is communicated with a first gas source, the outlet end of the first branch pipeline is connected with a pipeline between the filter assembly and the receiving tank and is close to the filter assembly, and the first branch pipeline is provided with a first control valve. According to the utility model, the product retained in the pipeline on the downstream side of the filter assembly can enter the receiving tank as much as possible, so that the product yield is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filtration, in particular to a filtration system. Background Art

[0002] A multi-stage filtration system generally consists of a discharge tank, a primary filtration filter, a secondary filtration filter (and so on), and a receiving tank. Powered by clean compressed air or a pump, it first intercepts a part of the macromolecules through a liquid filter element with a larger pore size, and then intercepts relatively smaller substances (such as bacteria, viruses, etc.) through a filter membrane with a smaller pore size into the final receiving tank.

[0003] For a filtration system using a pump or clean compressed air as the power, since the compressed air cannot pass through the filtration filter, there will be products remaining in the pipeline on the downstream side of the filtration filter and unable to enter the receiving tank, resulting in a large amount of product waste. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, an object of the utility model is to provide a filtration system, which can make the products remaining in the pipeline on the downstream side of the filter assembly enter the receiving tank as much as possible, thereby improving the product yield.

[0005] The filtration system according to an embodiment of the utility model includes a discharge tank, a receiving tank, a filter assembly, and a first branch pipeline. The discharge tank has a first accommodating cavity for accommodating the liquid to be filtered; the receiving tank has a second accommodating cavity for accommodating the filtered liquid; the filter assembly is connected between the discharge tank and the receiving tank through a pipeline and is communicated with the first accommodating cavity and the second accommodating cavity, and the filter assembly is used for filtering the liquid; the inlet end of the first branch pipeline is communicated with a first gas source, the outlet end of the first branch pipeline is connected to the pipeline between the filter assembly and the receiving tank and is arranged close to the filter assembly, and the first branch pipeline is provided with a first control valve.

[0006] The filtration system according to an embodiment of the utility model, by providing a first branch pipeline communicated with a first gas source, after the filter assembly finishes filtering the liquid, the first branch pipeline is used to introduce gas into the pipeline between the filter assembly and the receiving tank, and the gas squeezes the liquid remaining in the pipeline between the filter assembly and the receiving tank, so that the remaining liquid enters the receiving tank. Thus, the waste of liquid products is avoided and the yield of liquid products is improved; further, since the amount of liquid products remaining in the pipeline is reduced, the amount of buffer liquid, water, etc. used for flushing the pipeline subsequently can also be reduced, and the time consumed for concentrating the mixed liquid obtained after flushing is reduced. Therefore, it is also beneficial to reduce the production cost.

[0007] In some embodiments, the filtration system further includes a sterilization pipeline and a discharge pipeline. The sterilization pipeline is used to introduce a sterilizing substance into the filtration system, and the discharge pipeline is used to discharge the sterilizing substance after sterilizing the filtration system. The sterilization pipeline includes a first sterilization pipeline, and the outlet end of the first sterilization pipeline is connected to the upper part of the discharge tank and communicated with the first accommodation chamber.

[0008] In some embodiments, the discharge pipeline includes a first discharge pipeline, a second discharge pipeline, and a third discharge pipeline. The discharge tank is connected to a first gas pipeline, and the first gas pipeline is used to introduce gas into the first accommodation chamber. One end of the first gas pipeline is connected to one end of the first discharge pipeline. One end of the pipeline between the discharge tank and the filter assembly is connected to one end of the second discharge pipeline. One end of the pipeline between the filter assembly and the receiving tank is connected to one end of the third discharge pipeline.

[0009] In some embodiments, the first gas pipeline is connected to the upper part of the discharge tank.

[0010] In some embodiments, the first branch pipeline is connected to the first sterilization pipeline.

[0011] In some embodiments, the first branch pipeline includes a first pipeline and a second pipeline. One end of the first pipeline is connected to the first gas pipeline. A third control valve and a fourth control valve are respectively provided at both ends of the first pipeline. The other end of the first pipeline is connected to the second pipeline. One end of the second pipeline is connected to the first sterilization pipeline. The other end of the second pipeline is connected to the pipeline between the filter assembly and the inlet of the receiving tank. The first control valve is provided on the second pipeline.

[0012] In some embodiments, the sterilization pipeline further includes a second sterilization pipeline, and the outlet end of the second sterilization pipeline is connected between the discharge tank and the filter assembly. The discharge pipeline further includes a fourth discharge pipeline. One end of the fourth discharge pipeline is connected to the first branch pipeline. A fifth control valve is provided on the pipeline between one end of the fourth discharge pipeline and the outlet end of the first branch pipeline. A sixth control valve is provided on the pipeline between one end of the fourth discharge pipeline and the first sterilization pipeline.

[0013] In some embodiments, the filter assembly includes a plurality of connected filters. The filtration system further includes a second branch pipeline. The inlet end of the second branch pipeline is communicated with a second gas source. The outlet end of the second branch pipeline is connected to the pipeline between adjacent filters and is arranged close to the filter on the upstream side.

[0014] In some embodiments, a first gas pipeline is connected to the upper part of the discharge tank. The first gas pipeline is used to introduce gas into the first accommodation chamber. The first gas pipeline is the first gas source, and the first gas source and the second gas source are the same gas source.

[0015] In some embodiments, a breather is provided on the first gas pipeline. The breather is used to filter the gas. The inlet end of the first branch pipeline is connected to the pipeline between the breather and the outlet end of the first gas pipeline.

[0016] In some embodiments, the inlet end of the second branch pipeline is communicated with the outlet of the discharge tank, so that the first gas pipeline serves as the second gas source, and a second control valve is provided on the second branch pipeline.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 is a structural block diagram of the filtration system according to an embodiment of the present utility model.

[0020] Reference numerals:

[0021] Filtration system 100;

[0022] Discharge tank 10; Injection water pipe 101;

[0023] Receiving tank 20;

[0024] Filter assembly 30;

[0025] Filter 301; Pressure gauge 302; Exhaust port 303;

[0026] First branch pipeline 40;

[0027] First control valve 401; First pipeline 402; Second pipeline 403; Third control valve 404;

[0028] Fourth control valve 405; Fifth control valve 406; Sixth control valve 407;

[0029] Second branch pipeline 50;

[0030] Second control valve 501;

[0031] First gas pipeline 60;

[0032] The first gas source 601; the second gas source 602; the first breathing apparatus 603;

[0033] The first sterilization pipeline 701; the second sterilization pipeline 702;

[0034] The first discharge pipeline 801; the second discharge pipeline 802; the third discharge pipeline 803;

[0035] The fourth discharge pipeline 804; the sixth discharge pipeline 806;

[0036] The automatic valve 901; the self - acting regulating valve 902; the manual valve 903;

[0037] The discharge pipe 120; the control system 140;

[0038] The temperature detection component 141; the pressure detection component 142; the flow detection component 143;

[0039] The first discharge port 150; the second discharge port 160;

[0040] The integrity tester 170; the first connection port 171; the second connection port 172. Detailed implementation manners

[0041] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0042] Unless otherwise defined, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs; the terms used in the description of the present utility model in the specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model; the terms "including" and "having" and any variations thereof in the specification and claims of the present utility model and the above - mentioned drawings are intended to cover non - exclusive inclusion. The terms "first", "second", etc. in the specification and claims of the present utility model or the above - mentioned drawings are used to distinguish different objects and not to describe a specific order or primary - secondary relationship.

[0043] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "attachment" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection, or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0044] The term "and / or" in the present utility model is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present utility model generally represents an "or" relationship between the front and rear associated objects.

[0045] In the embodiments of the present utility model, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present utility model shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only for illustrative purposes and should not constitute any limitation to the present utility model.

[0046] The term "a plurality of" appearing in the present utility model refers to two or more (including two).

[0047] The following Figure 1 is used to describe the filtration system 100 of the present utility model.

[0048] As Figure 1 shown, the filtration system 100 according to an embodiment of the present utility model includes a discharge tank 10, a receiving tank 20, a filter assembly 30 and a first pipeline 40. The discharge tank 10 has a first accommodation cavity for accommodating the liquid to be filtered; the receiving tank 20 has a second accommodation cavity for accommodating the filtered liquid; the filter assembly 30 is connected between the discharge tank 10 and the receiving tank 20 through a pipeline and is in communication with the first accommodation cavity and the second accommodation cavity. The filter assembly 30 is used for filtering the liquid, and the filter assembly 30 includes a liquid-permeable and air-impermeable filter; the inlet end of the first pipeline 40 is in communication with a first air source 601, the outlet end of the first pipeline 40 is connected to the pipeline between the filter assembly 30 and the receiving tank 20 and is arranged close to the filter assembly 30, and the first pipeline 40 is provided with a first control valve 401.

[0049] Specifically, in this embodiment, the power for the liquid to flow from the first accommodating chamber to the second accommodating chamber can be a pressure pump disposed on the pipeline between the discharge tank 10 and the receiving tank 20; the power for the liquid to flow from the first accommodating chamber to the second accommodating chamber can also be to introduce clean gas into the upper part of the discharge tank 10 to squeeze the liquid to be filtered in the first accommodating chamber, so that the liquid flows to the second accommodating chamber.

[0050] The filter assembly 30 may only include one filter 301, and the outlet end of the first branch pipeline 40 is connected to the pipeline between the filter 301 and the receiving tank 20, and the filter 301 is a liquid-permeable and gas-impermeable filter. The filter assembly 30 may include a plurality of filters 301, the outlet end of the first branch pipeline 40 is connected to the pipeline between the lowermost filter 301 and the receiving tank 20, and at least the lowermost filter 301 is a liquid-permeable and gas-impermeable filter.

[0051] A liquid-permeable and gas-impermeable filter means that the filter 301 allows liquid molecules of appropriate size to pass through the filter element of the filter 301 and does not allow gas to pass through the filter element of the filter 301.

[0052] The first gas source 601 can be an air gas source or a nitrogen gas source, etc. The inlet end of the first branch pipeline 40 is communicated with the first gas source 601 so that the first gas source 601 can inject gas into the first branch pipeline 40. The outlet end of the first branch pipeline 40 is connected to the pipeline between the filter assembly 30 and the receiving tank 20, so that the first branch pipeline 40 can introduce gas into the pipeline between the filter assembly 30 and the receiving tank 20 to purge the pipeline between the filter assembly 30 and the receiving tank 20, so that the liquid product remaining in the pipeline between the filter assembly 30 and the receiving tank 20 can be purged into the receiving tank 20.

[0053] The outlet end of the first branch pipeline 40 is disposed close to the filter assembly 30 so that most of the products in the pipeline between the filter assembly 30 and the receiving tank 20 can be purged into the receiving tank 20 as much as possible.

[0054] The first branch pipeline 40 is provided with a first control valve 401. When the filter assembly 30 is normally filtering the liquid, the first control valve 401 is in a closed state to reduce the possibility of the liquid entering the first branch pipeline 40; when the filter assembly 30 finishes filtering the liquid, the first control valve 401 is opened so that gas can enter the first branch pipeline 40, and the gas discharged from the first branch pipeline 40 can purge the pipeline between the filter assembly 30 and the receiving tank 20.

[0055] According to the filtration system 100 of the embodiments of the present utility model, by providing a first branch pipeline 40 communicated with a first gas source 601, after the filter assembly 30 finishes filtering the liquid, the first branch pipeline 40 is used to introduce gas into the pipeline between the filter assembly 30 and the receiving tank 20. The gas squeezes the liquid retained in the pipeline between the filter assembly 30 and the receiving tank 20, so that the retained liquid enters the receiving tank 20. Thus, the waste of liquid products is avoided and the yield of liquid products is improved. Further, since the amount of liquid products retained in the pipeline is reduced, the amount of buffer liquid, water, etc. used for flushing the pipeline subsequently can also be reduced, and the time consumed for concentrating the mixed liquid obtained after flushing is reduced. Therefore, it is also beneficial to reduce the production cost.

[0056] In some embodiments, as Figure 1 shown, the filter assembly 30 includes a plurality of connected filters 301. The filtration system 100 further includes a second branch pipeline 50. The inlet end of the second branch pipeline 50 is communicated with a second gas source 602, and the outlet end of the second branch pipeline 50 is connected to the pipeline between adjacent filters 301 and is arranged close to the filter 301 on the upstream side.

[0057] All the liquid to be filtered must pass through the filtration of the filter 301 on the most downstream side. By providing a plurality of filters 301, the filters 301 on the upstream side can pre-filter some impurities, which is beneficial to reducing the filtration pressure of the filter 301 on the most downstream side and improving the service life of the filter 301 on the most downstream side. For example, the filter assembly 30 includes two filters 301. Along the direction from upstream to downstream, the two filters 301 are a pre-filter 301 and a nano-film filter 301 respectively, and the pre-filter 301 is used to filter impurities with larger sizes.

[0058] For the embodiments in which the filter assembly 30 includes a plurality of filters 301, for the pipeline between adjacent filters 301, since gas cannot pass through the filter 301 on the upstream side, the liquid will be retained in the pipeline between adjacent filters 301. In this embodiment, by providing the second branch pipeline 50, the inlet end of the second branch pipeline 50 is communicated with the second gas source 602, and the second gas source 602 injects gas into the second branch pipeline 50. The outlet end of the second branch pipeline 50 is connected to the pipeline between adjacent filters 301, that is, the gas discharged from the second branch pipeline 50 will enter the pipeline between adjacent filters 301. Thus, the gas can squeeze the liquid retained in the pipeline between adjacent filters 301, so that the liquid enters the filter 301 on the downstream side. Finally, under the squeezing of the gas output by the first branch pipeline 40, the retained liquid can enter the collection tank.

[0059] The outlet end of the second branch pipeline 50 is arranged close to the filter 301 on the upstream side, so that most of the products in the pipeline between the filter assembly 30 and the receiving tank 20 can enter the filter 301 on the downstream side as much as possible.

[0060] Thus, the yield of the liquid product can be further improved and the production cost can be reduced.

[0061] According to some embodiments of the present utility model, as Figure 1 shown, the inlet end of the second pipeline 50 is communicated with the outlet of the discharge tank 10, so that the first gas pipeline 60 serves as the second gas source 602, and the second pipeline 50 is provided with a second control valve 501.

[0062] According to some embodiments of the present utility model, as Figure 1 shown, the filtration system 100 further includes a sterilization pipeline and a discharge pipeline. The sterilization pipeline is used to introduce a sterilization substance into the filtration system 100, and the discharge pipeline is used to discharge the sterilization substance after sterilizing the filtration system 100; for example, the sterilization substance can be steam.

[0063] As Figure 1 shown, the sterilization pipeline includes a first sterilization pipeline 701. The outlet end of the first sterilization pipeline 701 is connected to the upper part of the discharge tank 10 and communicated with the first accommodation cavity; thus, the first sterilization pipeline 701 will introduce a sterilization substance into the first accommodation cavity to sterilize the first accommodation cavity. The first sterilization pipeline 701 is connected to the upper part of the discharge tank 10, so that steam can fill the discharge tank 10 from top to bottom, which is beneficial to achieving a better sterilization effect.

[0064] As Figure 1 shown, the discharge pipeline includes a first discharge pipeline 801, a second discharge pipeline 802 and a third discharge pipeline 803. The upper part of the discharge tank 10 is connected with a first gas pipeline 60. The first gas pipeline 60 is used to introduce gas into the first accommodation cavity. One end of the first gas pipeline 60 is connected with the first discharge pipeline 801. In this way, the sterilization substance entering the first accommodation cavity can enter the first gas pipeline 60 through the outlet end of the first gas pipeline 60 to sterilize the first gas pipeline 60, and then the sterilized sterilization substance will be discharged from the first discharge pipeline 801.

[0065] One end of the pipeline between the discharge tank 10 and the filter assembly 30 is connected with the second discharge pipeline 802. Thus, the sterilization substance after sterilizing the discharge tank 10 can be discharged from the second discharge pipeline 802, reducing the possibility that a large amount of sterilized sterilization substance directly enters the filter assembly 30, which is beneficial to enabling the filter assembly 30 to obtain a better sterilization effect. For example, the liquefied water after steam sterilization is discharged from the second discharge pipeline 802, and steam can enter the filter assembly 30 as much as possible. One end of the third discharge pipeline 803 is connected between the filter assembly 30 and the receiving tank 20, so that the sterilization substance can enter the filter assembly 30 to sterilize the filter assembly 30, and the sterilization substance after sterilizing the filter assembly 30 is discharged from the third discharge pipeline 803.

[0066] Specifically, an automatic valve 901 is provided corresponding to each of the first discharge pipeline 801, the second discharge pipeline 802, and the third discharge pipeline 803 to control the on / off of the first discharge pipeline 801, the second discharge pipeline 802, and the third discharge pipeline 803 respectively. In the non-sterilization state, the automatic valves 901 of the first discharge pipeline 801, the second discharge pipeline 802, and the third discharge pipeline 803 are all in the closed state.

[0067] For example, when sterilizing the first gas pipeline 60, the outlet of the discharge tank 10 can be closed so that the sterilizing substance can enter the first gas pipeline 60 as much as possible to perform targeted sterilization on the first gas pipeline 60, and the sterilized substance is discharged from the first discharge pipeline 801. When performing targeted sterilization on the discharge tank 10, the first gas pipeline 60 and the discharge tank 10 can be made non-conductive, and the filter assembly 30 is also non-conductive with the discharge tank 10, so that the sterilizing substance can enter the discharge tank 10 as much as possible to sterilize the discharge tank 10, and the sterilized substance is discharged from the second discharge pipeline 802.

[0068] Thus, the filtration system 100 of the present application can achieve segmented sterilization, can perform more effective sterilization treatment on different sections and dead corners of the filtration system 100, and reduce the sterilization blind area; it can also make flexible sterilization arrangements according to the specific conditions and requirements of different sections. For example, for sections with relatively serious pollution, the sterilization treatment can be strengthened, while for relatively clean sections, the treatment time and intensity can be appropriately reduced; segmented sterilization also helps to reduce the interference to the production line and reduce the production stop time and maintenance cost.

[0069] The sterilization of the filtration system 100 can be realized, ensuring that the filtration system 100 has a good aseptic environment.

[0070] Specifically, as Figure 1 shown, the first sterilization pipeline 701 is provided with two automatic valves 901 and a self-operated regulating valve 902, and a self-operated regulating valve 902 of the first sterilization pipeline 701 is located between the two automatic valves 901 of the first sterilization pipeline 701.

[0071] According to some embodiments of the present invention, as Figure 1 shown, the first branch pipeline 40 is connected to the first sterilization pipeline 701.

[0072] For an embodiment where the first pipeline 40 is not directly connected to the first sterilization pipeline 701, the sterilizing substance needs to pass through the discharge tank 10 and the first gas pipeline 60 and then enter the first pipeline 40 to sterilize the first pipeline 40. In this embodiment, the first pipeline 40 is directly connected to the first sterilization pipeline 701. Thus, the sterilizing substance in the first sterilization pipeline 701 can directly enter the first pipeline 40 to sterilize the first pipeline 40. In this way, the sterilization effect on the first pipeline 40 is better.

[0073] Specifically, the connection between the first pipeline 40 and the first sterilization pipeline 701 is located between the automatic valve 901 near the inlet end of the first sterilization pipeline 701 and the self-operated regulating valve 902 of the first sterilization pipeline 701.

[0074] According to some embodiments of the present invention, as Figure 1 shown, the first pipeline 40 includes a first pipeline 402 and a second pipeline 403. One end of the first pipeline 402 is connected to the first gas pipeline 60. Third control valves 404 and fourth control valves 405 are respectively provided at both end portions of the first pipeline 402. The other end of the first pipeline 402 is connected to the second pipeline 403. One end of the second pipeline 403 is connected to the first sterilization pipeline 701. The other end of the second pipeline 403 is connected to the pipeline between the filter assembly 30 and the inlet of the receiving tank 20. The first control valve 401 is provided on the second pipeline 403.

[0075] It should be noted that the third control valve 404 and the fourth control valve 405 are respectively arranged near both ends of the first pipeline 402. By setting the third control valve 404, it is possible to prevent the first pipeline 40 from being in a high-pressure state during the filtering state of the filtering system 100. That is, only when it is necessary to purge the pipeline on the downstream side of the filter assembly 30, the third control valve 404, the fourth control valve 405 and the first control valve 401 are opened to connect the first gas pipeline 60 and the first pipeline 40. At the same time, by setting the first control valve 401, the third control valve 404 and the fourth control valve 405, the first pipeline 40 can cope with more unexpected situations or meet more usage requirements. For example, when a certain control valve is damaged, the first pipeline 40 can still be normally controlled to be turned on and off.

[0076] According to some embodiments of the present invention, as Figure 1 shown, the sterilization pipeline further includes a second sterilization pipeline 702. The outlet end of the second sterilization pipeline 702 is connected between the discharge tank 10 and the filter assembly 30. By providing the second sterilization pipeline 702, that is, by increasing the number of sterilization pipelines, the sterilization dead corners of the filtering system 100 can be reduced, and the sterilization efficiency and effect of the filtering system 100 can be increased.

[0077] The discharge pipeline further includes a fourth discharge pipeline 804. One end of the fourth discharge pipeline 804 is connected to the first branch pipeline 40. A fifth control valve 406 is provided in the pipeline between one end of the fourth discharge pipeline 804 and the outlet end of the first branch pipeline 40. A sixth control valve 407 is provided in the pipeline between one end of the fourth discharge pipeline 804 and the first sterilization pipeline 701.

[0078] It should be noted that the fifth control valve 406 and the sixth control valve 407 are provided in the second pipeline 403 and are both arranged near the other end of the second pipeline 403. The first control valve 401 is arranged near one end of the second pipeline 403, so that control valves are provided at both ends of the second pipeline 403.

[0079] During use, the sixth control valve 407 can be opened and the fifth control valve 406 can be closed, so that the sterilization substance discharged from the first sterilization pipeline 701 and entering the first branch pipeline 40 can be discharged from the fourth discharge pipeline 804; then, the sixth control valve 407 is closed and the fifth control valve 406 is opened, so that the sterilization substance discharged from the second sterilization pipeline 702 and entering the filter assembly 30 and then entering the first branch pipeline 40 can be discharged from the fourth discharge pipeline 804. Thus, segmented sterilization of the filtration system 100 of the present application can be realized, and more effective sterilization treatment can be carried out for different sections and dead corners of the filtration system 100, reducing the sterilization blind area, providing a better aseptic environment for the filtration process; flexible sterilization arrangements can also be made according to the specific conditions and requirements of different sections. For example, for sections with more serious pollution, the sterilization treatment can be strengthened, while for relatively clean sections, the treatment time and intensity can be appropriately reduced, improving the sterilization efficiency and effect; segmented sterilization also helps to reduce the interference to the production line, reducing the production stop time and maintenance cost.

[0080] Specifically, the inlet end of the second branch pipeline 50 is located on the downstream side of the outlet end of the second sterilization pipeline 702. That is to say, the sterilization substance discharged from the second sterilization pipeline 702 can enter the second branch pipeline 50 to sterilize the second branch pipeline 50.

[0081] An automatic valve 901 is provided on the fourth discharge pipeline 804 to control the on-off of the fourth discharge pipeline 804.

[0082] In some embodiments, as Figure 1 shown, an automatic valve 901 is provided on the second sterilization pipeline 702. An automatic valve 901 is provided between the outlet end of the second sterilization pipeline 702 and the outlet of the discharge tank 10.

[0083] In some embodiments, the receiving tank 20 is connected with a sixth discharge pipeline 806, and the sixth discharge pipeline 806 is used to discharge the sterilization substance after sterilizing the second accommodation cavity.

[0084] Specifically, a discharge pipe 120 is connected to the bottom of the receiving tank 20. The discharge pipe 120 communicates with the second accommodating chamber so that the liquid in the second accommodating chamber can be discharged via the discharge pipe 120. The inlet end of the sixth discharge pipeline 806 is connected to the discharge pipe 120 so that the sterilized substance after sterilizing the second accommodating chamber can be discharged via the sixth discharge pipeline 806. An automatic valve 901 is provided on the sixth discharge pipeline 806 to control the on / off of the sixth discharge pipeline 806. An automatic valve 901 is provided on the discharge pipe 120 to control the on / off of the discharge pipe 120.

[0085] In some embodiments, as Figure 1 shown, manual valves 903 are provided at both the inlet end and the outlet end of the filter 301. The manual valves 903 are directly connected to the inlet end or the outlet end of the filter 301. The manual valve 903 is used to manually adjust the on / off of the pipeline. Setting the manual valve 903 enables manual intervention when the automatic control system fails to execute commands normally.

[0086] In some embodiments, as Figure 1 shown, the second branch pipeline 50 is provided with a manual valve 903. The manual valve 903 of the second branch pipeline 50 is arranged near the outlet end of the second branch pipeline 50. The second control valve 501 of the second branch pipeline 50 is arranged near the inlet end of the second branch pipeline 50. Setting the manual valve 903 enables manual intervention when the automatic control system fails to execute commands normally.

[0087] The first control valve 401, the second control valve 501, the fifth control valve 406, and the sixth control valve 407 may all be automatic valves 901.

[0088] In some embodiments, as Figure 1 shown, the filter assembly 30 includes a plurality of connected filters 301. The filtration system 100 further includes a second branch pipeline 50. The inlet end of the second branch pipeline 50 communicates with the second gas source 602. The outlet end of the second branch pipeline 50 is connected to the pipeline between adjacent filters 301 and is arranged near the upstream filter 301.

[0089] All the liquid to be filtered must pass through the filtration of the lowermost filter 301. By providing a plurality of filters 301, the filters 301 on the upstream side can pre-filter some impurities, which is beneficial to reducing the filtration pressure of the lowermost filter 301 and improving the service life of the lowermost filter 301. For example, the filter assembly 30 includes two filters 301. Along the upstream to downstream direction, the two filters 301 are a pre-filter 301 and a nano-membrane filter 301 respectively. The pre-filter 301 is used to filter impurities with larger sizes.

[0090] For an embodiment in which the filter assembly 30 includes a plurality of filters 301, for the pipeline between adjacent filters 301, since gas cannot pass through the filter 301 on the upstream side, therefore, the liquid will stay in the pipeline between adjacent filters 301. In this embodiment, by providing a second branch pipeline 50, the inlet end of the second branch pipeline 50 is communicated with a second gas source 602, the second gas source 602 injects gas into the second branch pipeline 50, and the outlet end of the second branch pipeline 50 is connected to the pipeline between adjacent filters 301, that is, the gas discharged from the second branch pipeline 50 will enter the pipeline between adjacent filters 301, so that the gas can squeeze the liquid staying in the pipeline between adjacent filters 301, making the liquid enter the filter 301 on the downstream side, and finally, under the squeezing of the gas output by the first branch pipeline 40, the staying liquid can enter the collection tank.

[0091] The outlet end of the second branch pipeline 50 is arranged close to the filter 301 on the upstream side, so that most of the products in the pipeline between the filter assembly 30 and the receiving tank 20 can enter the filter 301 on the downstream side as much as possible.

[0092] Thus, the yield of the liquid product can be further improved and the production cost can be reduced.

[0093] According to some embodiments of the present invention, as Figure 1 shown, the upper part of the discharge tank 10 is connected with a first gas pipeline 60, and the first gas pipeline 60 is used to introduce gas into the first accommodating cavity. The gas entering the first accommodating cavity can squeeze the liquid in the first accommodating cavity, so that the liquid in the first accommodating cavity is discharged and enters the filter assembly 30 for the filtering process.

[0094] The gas introduced into the first accommodating cavity by the first gas pipeline 60 can be pure air or pure nitrogen, etc.

[0095] According to some embodiments of the present invention, as Figure 1 shown, the first gas pipeline 60 is the first gas source 601. That is to say, the inlet end of the first branch pipeline 40 is connected to the first gas pipeline 60. When it is necessary to purge the liquid product in the pipeline between the filter assembly 30 and the receiving tank 20, the first branch pipeline 40 and the first gas pipeline 60 can be communicated. In this embodiment, using the first gas pipeline 60 as the first gas source 601 can reduce the setting of additional gas sources, and reduce the production cost and space occupancy of the filtration system 100.

[0096] According to some embodiments of the present invention, as Figure 1As shown, the first gas pipeline 60 is provided with a first respirator 603. The first respirator 603 is used to filter the gas to reduce the possibility of impurities entering the filtration system 100 along with the gas. The inlet end of the first branch pipeline 40 is connected to the pipeline between the first respirator 603 and the outlet end of the first gas pipeline 60, so that the gas entering the first branch pipeline 40 can be filtered by the first respirator 603, reducing the possibility of impurities entering the first branch pipeline 40 along with the gas.

[0097] More specifically, the first gas pipeline 60 is further provided with two automatic valves 901 and a self-operated regulating valve 902. Along the direction from the inlet end to the outlet end of the first gas pipeline 60, an automatic valve 901 of the first gas pipeline 60, the first respirator 603, the inlet end of the first branch pipeline 40, the self-operated regulating valve 902 of the first gas pipeline 60, and the other automatic valve 901 of the first gas pipeline 60 are arranged in sequence.

[0098] According to some embodiments of the present invention, as Figure 1 shown, the inlet end of the second branch pipeline 50 is communicated with the outlet of the discharge tank 10, so that the first gas pipeline 60 serves as the second gas source 602, and the second branch pipeline 50 is provided with a second control valve 501.

[0099] Specifically, in the embodiment where the filter assembly 30 includes two filters 301, the inlet end of the second branch pipeline 50 is connected to the pipeline between the upstream filter 301 and the discharge tank 10, so that the gas discharged from the outlet of the discharge tank 10 can enter the second branch pipeline 50, and then enter the pipeline between the two filters 301 through the second branch pipeline 50.

[0100] In the embodiment where the filter assembly 30 includes more than three filters 301, each of the remaining filters 301 except the lowermost filter 301 is connected in parallel with a second branch pipeline 50; or, the inlet end of each second branch pipeline 50 is connected to the pipeline between the uppermost filter 301 and the outlet of the discharge tank 10.

[0101] When the filter 301 is normally filtering the liquid, the second control valve 501 is closed; when it is necessary to purge the pipeline between adjacent filters 301 to make the liquid in the pipeline between adjacent filters 301 flow to the downstream filter 301, the second control valve 501 is opened.

[0102] The first branch pipeline 40 is connected to the first gas pipeline 60 and not to the pipeline between the filter assembly 30 and the outlet of the discharge tank 10. In this way, it is possible to prevent the unfiltered liquid between the filter assembly 30 and the discharge tank 10 from directly entering the receiving tank 20.

[0103] By connecting the inlet end of the second pipeline 50 to the outlet of the discharge tank 10, it is possible to eliminate the need for an additional air source, which helps reduce the production cost of the filtration system 100 and also makes the sterilization process of the filtration system 100 more efficient.

[0104] In some embodiments, as Figure 1 shown, the filtration system 100 further includes a control system 140. For example, the control system 140 can be a PCS control system. Temperature detection components 141, pressure detection components 142, and flow detection components 143 are sequentially provided in the pipeline between the discharge tank 10 and the filter assembly 30. The temperature detection components 141, pressure detection components 142, and flow detection components 143 are all communicatively connected to the control system 140.

[0105] The temperature detection component 141 is used to detect the temperature of the liquid flowing through the pipeline, the pressure detection component 142 is used to detect the pressure of the liquid flowing through the pipeline, and the flow detection component 143 is used to detect the flow rate of the liquid flowing through the pipeline.

[0106] The control system 140 plays a controlling role in the entire process of production, preparation, and after-use of the filtration system 100. It can precisely control the opening and closing of the automatic valve 901 and record all data such as air pressure, temperature, weight, flow rate, and the time of the entire process through the temperature detection component 141, pressure detection component 142, flow detection component 143, etc., to obtain a more complete production data chain.

[0107] In some embodiments, as Figure 1 shown, one end of the second discharge pipeline 802 is connected to the pipeline between the temperature detection component 141 and the outlet end of the second sterilization pipeline 702. A first discharge port 150 is connected to the pipeline between the temperature detection component 141 and the outlet end of the second sterilization pipeline 702. Automatic valves 901, one end of the third discharge pipeline 803, a second discharge port 160, and two automatic valves 901 are sequentially provided in the pipeline from the outlet end of the first pipeline 40 to the inlet of the receiving tank 20. The discharge tank 10 is connected to an injection water pipe 101.

[0108] When performing a water flux test on the lowermost filter 301: Inject suitable injection water into the discharge tank 10 through the injection water pipe 101 and apply pressure to the inside of the discharge tank 10. Close the two manual valves 903 at the outlet end and the inlet end of the filter 301 on the upstream side, so that the injection water rinses the lowermost filter 301 through the second pipeline 50 and is discharged from the second discharge port 160 on the downstream side of one end of the third discharge pipeline 803. After the rinsing is qualified, apply pressure again and use the flow detection component 143 to perform a flow rate detection on the lowermost filter 301 to obtain the water flux result per unit time.

[0109] In some embodiments, such as Figure 1 shown, the filtration system 100 further includes an integrity tester 170, and the integrity tester 170 is used to measure the integrity of the filter 301. When performing the integrity test, first remove the pressure gauge 302 provided on the filter 301, connect the second connection port 172 of the integrity tester 170 to the connection port of the pressure gauge 302 of the filter 301, close the manual valve 903 directly connected to the inlet end of the filter 301, the manual valve 903 directly connected to the outlet end of the filter 301, and the exhaust port 303 provided on the upper part of the filter 301, and open the exhaust port 303 at the lower part of the filter 301, so that the clean compressed air enters the integrity tester 170 from the first connection port 171 of the integrity tester 170 and then enters the filter 301 from the second connection port 172 to perform the integrity test on the filter 301, thereby achieving the purpose of the integrity test, making the production more compliant with the quality management regulations, and ensuring the product quality more safely.

[0110] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" etc. means that the specific features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0111] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A filtration system, characterized in that, Comprising: A discharge tank (10) having a first accommodation chamber for accommodating a liquid to be filtered; A receiving tank (20) having a second accommodation chamber for accommodating the filtered liquid; A filter assembly (30) connected between the discharge tank (10) and the receiving tank (20) through a pipeline and communicating with the first accommodation chamber and the second accommodation chamber, the filter assembly (30) being used for filtering the liquid; A first branch pipeline (40), an inlet end of the first branch pipeline (40) communicating with a first gas source (601), an outlet end of the first branch pipeline (40) being connected to the pipeline between the filter assembly (30) and the receiving tank (20) and being disposed close to the filter assembly (30), and a first control valve (401) being provided on the first branch pipeline (40).

2. The filtration system according to claim 1, wherein It further includes a sterilization pipeline, the sterilization pipeline including a first sterilization pipeline (701), an outlet end of the first sterilization pipeline (701) being connected to the upper part of the discharge tank (10) and communicating with the first accommodation chamber.

3. The filtration system according to claim 2, characterized in that, It further includes a discharge pipeline, the discharge pipeline including a first discharge pipeline (801), a second discharge pipeline (802) and a third discharge pipeline (803), the discharge tank (10) being connected with a first gas pipeline (60) for introducing gas into the first accommodation chamber, one end of the first discharge pipeline (801) being connected to the first gas pipeline (60), one end of the second discharge pipeline (802) being connected to the pipeline between the discharge tank (10) and the filter assembly (30), and one end of the third discharge pipeline (803) being connected between the filter assembly (30) and the receiving tank (20).

4. The filtration system according to claim 3, wherein The first gas pipeline (60) is connected to the upper part of the discharge tank (10); the first branch pipeline (40) is connected to the first sterilization pipeline (701).

5. The filtration system according to claim 4, wherein The first branch pipeline (40) includes a first pipeline (402) and a second pipeline (403), one end of the first pipeline (402) being connected to the first gas pipeline (60), third control valves (404) and fourth control valves (405) being respectively provided at two ends of the first pipeline (402), the other end of the first pipeline (402) being connected to the second pipeline (403), one end of the second pipeline (403) being connected to the first sterilization pipeline (701), the other end of the second pipeline (403) being connected to the pipeline between the filter assembly (30) and the inlet of the receiving tank (20), and the first control valve (401) being provided on the second pipeline (403).

6. The filtration system according to claim 4, wherein The sterilization pipeline further includes a second sterilization pipeline (702), an outlet end of the second sterilization pipeline (702) being connected between the discharge tank (10) and the filter assembly (30); The discharge pipeline further includes a fourth discharge pipeline (804). One end of the fourth discharge pipeline (804) is connected to the first branch pipeline (40). A fifth control valve (406) is provided in the pipeline between one end of the fourth discharge pipeline (804) and the outlet end of the first branch pipeline (40). A sixth control valve (407) is provided in the pipeline between one end of the fourth discharge pipeline (804) and the first sterilization pipeline (701).

7. The filtration system according to any one of claims 1-6, characterized in that, The filter assembly (30) includes a plurality of connected filters (301). The filtration system (100) further includes a second branch pipeline (50). The inlet end of the second branch pipeline (50) is communicated with a second gas source (602). The outlet end of the second branch pipeline (50) is connected to the pipeline between adjacent filters (301) and is arranged close to the upstream filter (301).

8. The filtration system according to claim 7, wherein The upper part of the discharge tank (10) is connected with a first gas pipeline (60). The first gas pipeline (60) serves as the first gas source (601). The first gas source (601) and the second gas source (602) are the same gas source.

9. The filtration system according to claim 8, characterized in that, The first gas pipeline (60) is provided with a first breather (603). The first breather (603) is used for filtering gas. The inlet end of the first branch pipeline (40) is connected to the pipeline between the first breather (603) and the outlet end of the first gas pipeline (60).

10. The filtration system according to claim 8, characterized in that, The inlet end of the second branch pipeline (50) is communicated with the outlet of the discharge tank (10) so that the first gas pipeline (60) serves as the second gas source (602). The second branch pipeline (50) is provided with a second control valve (501).

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