A liquid flow channel structure for a virus removal filter

Abstract

This utility model provides a liquid flow channel structure for a virus removal filter, including an upper cover, several intermediate plates, and a lower cover connected in sequence. Compared with the prior art, the beneficial effects of this utility model are: 1. The venting ports of the pre-filter and post-filter chambers can completely exhaust the gas in the first pre-filter and first post-filter chambers, thereby preventing airlock on the filter membrane due to gas presence and avoiding affecting filtration efficiency; 2. The combination of straight and oblique flow channels, with the oblique flow channel outlet concentrated on one side, facilitates concentrated liquid flow into the second post-filter chamber, and also solves many problems in the filter manufacturing process, improving the utilization rate of the filter membrane; 3. The inlet buffer chamber and outlet buffer chamber allow the filter liquid to be spread smoothly and evenly on the filter membrane, avoiding the impact of liquid inflow on the filter membrane filtration effect.

Description

Technical Field

[0001] This utility model relates to the field of virus removal filter technology, and in particular to a liquid flow channel structure for a virus removal filter. Background Technology

[0002] In the virus removal process of biopharmaceuticals, virus removal filtration is a core step in ensuring the safety of drugs against viruses. Existing mainstream virus filter membranes have complex internal structures, leading to various problems during use, such as the inability to effectively expel gas from the chamber, creating airlocks in the filter pores and affecting filtration efficiency; significant impact on the filter membrane during liquid inlet; complex liquid flow channel structures resulting in low membrane utilization and manufacturing difficulties. Therefore, it is necessary to improve the structure of existing virus removal filters to solve these technical problems. Utility Model Content

[0003] The purpose of this utility model is to disclose a liquid flow channel structure for a virus removal filter. The design includes exhaust ports for the pre-filter and post-filter chambers to completely vent gas from the first pre-filter and post-filter chambers, thus preventing airlock on the filter membrane and avoiding impact on filtration efficiency. Secondly, the combination of straight and angled flow channels, with the angled flow channel outlet concentrated on one side, facilitates concentrated liquid flow into the second post-filter chamber. This also solves many problems in the filter manufacturing process, resulting in a simple structure, uncomplicated processing, and improved filter membrane utilization. Thirdly, the inclusion of inlet and outlet buffer chambers allows the filter material to spread smoothly and evenly on the filter membrane, preventing impact during liquid inflow from affecting the filtration effect.

[0004] To achieve the above objectives, this utility model provides a liquid flow channel structure for a virus removal filter, comprising an upper cover, several intermediate plates, and a lower cover connected in sequence; the upper cover is provided with a connected pre-filter liquid chamber exhaust port and a first pre-filter chamber, as well as a connected post-filter liquid chamber exhaust port and a first post-filter chamber; the intermediate plates are provided with several liquid flow channels, a filter membrane laid flat and covering the liquid flow channels, a second pre-filter chamber, and a second post-filter chamber; the liquid enters the liquid flow channel through the filter membrane in the second pre-filter chamber and then flows into the second post-filter chamber; the lower cover is provided with a connected inlet and inlet buffer chamber, as well as a connected outlet and outlet buffer chamber; the inlet buffer chamber, the second pre-filter chamber, and the first pre-filter chamber are connected, and the outlet buffer chamber, the second post-filter chamber, and the first post-filter chamber are connected.

[0005] In some embodiments, the intermediate plate includes a sub-plate, a first partition, and a plurality of connecting ribs; the first partition divides the intermediate plate into an inlet zone and an outlet zone, the outlet zone forming a second post-filtration chamber, the sub-plate being connected to the intermediate plate by the connecting ribs, a second pre-filtration chamber being formed between adjacent connecting ribs, and the liquid flow channel being disposed on the sub-plate.

[0006] In some embodiments, the liquid flow channel includes a through straight flow channel and an inclined flow channel, the inclined flow channel being connected to a second post-filtration chamber.

[0007] In some embodiments, the inclined flow channel is provided with a downward-facing branch port, which is connected to an adjacent second pre-filter chamber.

[0008] In some embodiments, the sub-plate has filter membrane welding grooves on both its front and back sides, and the filter membrane is installed in the filter membrane welding grooves.

[0009] In some embodiments, the upper cover is provided with a second partition to divide the upper cover into a first pre-filter chamber and a first post-filter chamber, and the lower cover is provided with a third partition to divide the lower cover into a liquid inlet chamber and a liquid outlet chamber. The liquid inlet chamber and the liquid inlet buffer chamber are connected, and the liquid outlet chamber and the liquid outlet buffer chamber are connected. A plurality of intermediate plates are welded in sequence, and the upper cover frame, the intermediate plate frame and the lower cover frame are welded accordingly. The first partition, the second partition and the third partition are welded accordingly.

[0010] In some embodiments, both the intermediate plate and the lower cover are provided with welding shielding strips.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. Setting up exhaust ports for the pre-filter liquid chamber and the post-filter liquid chamber can completely exhaust the gas in the first pre-filter chamber and the first post-filter chamber, thereby preventing airlock on the filter membrane due to the presence of gas and avoiding affecting the filtration efficiency;

[0013] 2. The combination of straight and inclined flow channels concentrates the outlet of the inclined flow channel on one side, which facilitates the concentrated flow of liquid into the second filtration chamber. It also solves many problems in the filter manufacturing process, has a simple structure, is not complicated to process, and improves the utilization rate of the filter membrane.

[0014] 3. Setting up inlet and outlet buffer chambers allows the filter liquid to spread smoothly and evenly on the filter membrane, avoiding the impact of liquid inflow on the filtration effect. Attached Figure Description

[0015] Figure 1 This is a perspective view of the liquid flow channel structure of the virus removal filter shown in this utility model.

[0016] Figure 2 This is an internal structural diagram of the liquid flow channel structure of the virus removal filter shown in this utility model.

[0017] Figure 3 for Figure 1 A perspective view of the top cover shown;

[0018] Figure 4 for Figure 1 The diagram shows the internal structure of the top cover;

[0019] Figure 5 for Figure 1 A perspective view of the intermediate plate shown;

[0020] Figure 6 for Figure 1 The diagram shows the internal structure of the intermediate plate.

[0021] Figure 7 for Figure 6 Enlarged view of reference numeral A;

[0022] Figure 8 for Figure 6 Enlarged view of reference number B;

[0023] Figure 9 for Figure 1 A perspective view of the lower cover shown;

[0024] Figure 10 for Figure 1 The diagram shows the internal structure of the lower cover. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0026] like Figure 1-10 The liquid flow channel structure of a virus removal filter shown includes an upper cover 1, several intermediate plates 2 and a lower cover 3 connected in sequence.

[0027] The upper cover 1 is provided with a pre-filter liquid chamber exhaust port 111 and a first pre-filter chamber 11 connected to each other, and a post-filter liquid chamber exhaust port 121 and a first post-filter chamber 12 connected to each other.

[0028] The exhaust port 111 of the pre-filter chamber and the exhaust port 121 of the post-filter chamber can exhaust the gas in the first pre-filter chamber 11 and the first post-filter chamber 12, thereby preventing airlock on the filter membrane due to the presence of gas and avoiding affecting the filtration efficiency.

[0029] The intermediate plate 2 is provided with a plurality of liquid flow channels 23, a filter membrane (not shown) laid flat and covering the liquid flow channels 23, a second pre-filtration chamber 24 and a second post-filtration chamber 26.

[0030] The intermediate plate 2 includes a sub-plate 22, a first partition 21, and several connecting ribs 28. The first partition 21 divides the intermediate plate 2 into an inlet zone and an outlet zone. The outlet zone forms a second post-filtration chamber 26. The sub-plate 22 is connected to the intermediate plate 2 via the connecting ribs 28. A second pre-filtration chamber 24 is formed between adjacent connecting ribs 28. The liquid flow channel 23 is disposed on the sub-plate 22.

[0031] Several liquid flow channels 23 are arranged in parallel, which is simple in structure and allows the use of a single-size membrane material in the filter manufacturing process, reducing the manufacturing difficulty. The length of the filtrate flow path on both sides of the middle plate 2 is the same, and the pressure difference on both sides of the filter membrane is the same, which increases the service life of the filter membrane inside the same filter to the same level and improves the utilization rate of the filter membrane.

[0032] The liquid flow channel 23 includes a straight flow channel 231 and an inclined flow channel 232 that are interconnected. The inclined flow channel 232 is connected to the second filter chamber 26, and the outlet of the inclined flow channel 232 is concentrated on one side, which facilitates the concentrated flow of liquid into the second filter chamber 26.

[0033] The inclined flow channel 232 is provided with a downward-facing diversion port 233, which serves to divert the flow. The diversion port 233 is connected to the adjacent second pre-filter chamber 24. The sub-plate 22 is provided with filter membrane welding grooves 25 on both its front and back sides, and the filter membrane is installed in the filter membrane welding grooves 25.

[0034] The lower cover 3 is provided with a liquid inlet 32 ​​and a liquid inlet buffer chamber 321 that are connected to each other, as well as a liquid outlet 33 and a liquid outlet buffer chamber 331 that are connected to each other. The lower cover 3 is also provided with support legs 31.

[0035] The inlet buffer chamber 321 and the outlet buffer chamber 331 are provided so that the filter liquid can be spread smoothly and evenly on the filter membrane, avoiding the impact of the inlet liquid on the filtration effect of the filter membrane.

[0036] The inlet buffer chamber 321, the second pre-filter chamber 24, and the first pre-filter chamber 11 are connected, and the outlet buffer chamber 331, the second post-filter chamber 26, and the first post-filter chamber 12 are connected.

[0037] The upper cover 1 is provided with a second partition 14 to divide the upper cover 1 into a first pre-filter chamber 11 and a first post-filter chamber 12. The upper cover frame 13 and the second partition 14 are both provided with welded ribs 15.

[0038] The lower cover 3 is provided with a third partition 34 to divide the lower cover 3 into a liquid inlet chamber 322 and a liquid outlet chamber 332. The liquid inlet chamber 322 is connected to the liquid inlet buffer chamber 321, and the liquid outlet chamber 332 is connected to the liquid outlet buffer chamber 331. The lower cover frame 35 and the third partition 34 are both provided with welding surfaces 36.

[0039] Both the intermediate plate frame 27 and the first partition plate 21 are provided with a welding surface 272, and both the intermediate plate frame 27 and the first partition plate 21 are provided with welding ribs 271. The intermediate plate frames 27 of adjacent intermediate plates 2 are welded to each other, and the first partition plates 21 are welded to each other. Specifically, welding is carried out at the welding surface 272 and the welding ribs 271 to ensure sealing.

[0040] The upper cover frame 13, the middle plate frame 27, and the lower cover frame 35 are welded together, and the first partition 21, the second partition 14, and the third partition 34 are welded together. Specifically, welding is performed at the welding rib 15 and the welding surface 272, and welding is performed at the welding rib 271 and the welding surface 36 to ensure sealing.

[0041] The intermediate plate 2 is provided with a welding shielding strip 273, and the lower cover 3 is provided with a welding shielding strip 37, which shields the welding overflow between the welding rib and the welding surface, thereby improving the aesthetic appearance of the filter equipment.

[0042] The working process of the liquid flow channel structure of the virus removal filter is as follows: the liquid enters from the inlet 32, is buffered by the inlet buffer chamber 321, and gradually fills the inlet chamber 322, the second pre-filter chamber 24, and the first pre-filter chamber 11. It is then filtered through the filter membrane and enters the liquid flow channel 23, then flows into the second post-filter chamber 26, and passes through the outlet chamber 332 and the outlet buffer chamber 331 in sequence, and is finally discharged from the outlet 33.

[0043] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A liquid flow channel structure of a virus removing filter, characterized by, The device includes a top cover, several intermediate plates, and a bottom cover connected in sequence. The top cover has a connected exhaust port for the pre-filtration liquid chamber and a first pre-filtration chamber, as well as a connected exhaust port for the post-filtration liquid chamber and a first post-filtration chamber. The intermediate plates have several liquid channels, a filter membrane laid flat and covering the liquid channels, a second pre-filtration chamber, and a second post-filtration chamber. The liquid is filtered through the filter membrane in the second pre-filtration chamber, enters the liquid channel, and then flows into the second post-filtration chamber. The bottom cover has a connected inlet and inlet buffer chamber, as well as a connected outlet and outlet buffer chamber. The inlet buffer chamber, the second pre-filtration chamber, and the first pre-filtration chamber are connected, and the outlet buffer chamber, the second post-filtration chamber, and the first post-filtration chamber are also connected.

2. The liquid flow channel structure of a virus removal filter according to claim 1, wherein The intermediate plate includes a sub-plate, a first partition, and several connecting ribs; the first partition divides the intermediate plate into an inlet area and an outlet area, the outlet area forming a second post-filtration chamber, the sub-plate being connected to the intermediate plate by the connecting ribs, and a second pre-filtration chamber being formed between adjacent connecting ribs, the liquid flow channel being disposed on the sub-plate.

3. The liquid flow channel structure of a virus removal filter according to claim 2, wherein The liquid flow channel includes a straight flow channel and an oblique flow channel that are interconnected, and the oblique flow channel is connected to the second filtration chamber.

4. The liquid flow channel structure of a virus removal filter according to claim 3, wherein The inclined flow channel is provided with a downward-facing branch port, which is connected to the adjacent second pre-filter chamber.

5. The liquid flow channel structure of a virus removal filter according to claim 4, wherein The sub-plate has filter membrane welding grooves on both the front and back sides, and the filter membrane is installed in the filter membrane welding grooves.

6. The liquid flow channel structure of a virus removal filter according to claim 2, wherein The upper cover is provided with a second partition to divide the upper cover into a first pre-filter chamber and a first post-filter chamber, and the lower cover is provided with a third partition to divide the lower cover into a liquid inlet chamber and a liquid outlet chamber. The liquid inlet chamber and the liquid inlet buffer chamber are connected, and the liquid outlet chamber and the liquid outlet buffer chamber are connected. Several intermediate plates are welded in sequence, and the upper cover frame, the intermediate plate frame and the lower cover frame are welded in correspondence. The first partition, the second partition and the third partition are welded in correspondence.

7. The liquid flow channel structure of the virus removal filter according to claim 6, characterized in that, Both the middle plate and the lower cover are equipped with welded shielding strips.

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