Liquid disc filter

Abstract

The utility model relates to a liquid disc filter. A first shell is connected with a second shell through a buckle structure; a liquid microfiltration membrane is arranged between the first shell and the second shell; an exhaust valve branch device is arranged on one side of the first shell; the exhaust valve branch device exhausts the liquid microporous filter membrane under the working condition; a liquid collecting branch can be additionally arranged on the exhaust valve, so that a hose can be conveniently connected, and exhausted gas and exhausted liquid can be collected; a sealing ring is arranged on the exhaust valve, so that liquid discharged by the filter does not leak from a screwing thread of the exhaust valve in the exhaust process; the utility model relates to a liquid disc type filter, in particular to a liquid disc type filter, which solves the technical problems that in the existing liquid disc type filter with a hydrophilic polyvinylidene fluoride (PVDF) membrane, the interior of the liquid disc type filter needs to be emptied in the use process, but filtered liquid in an emptying valve can be brought out from a pipeline of the emptying valve during emptying and filtering, so that air is difficult to exhaust.

Description

Technical Field

[0001] Embodiments of this utility model relate to a filter, and more particularly to a liquid disc filter for biological separation media, reagents, devices, and detection technologies. Background Technology

[0002] In existing hydrophilic polyvinylidene fluoride (PVDF) membrane liquid disc filters, the inside of the liquid disc filter needs to be emptied during use. However, during emptying and filtering, some of the filtered liquid will be carried out from the emptying valve pipe, making it difficult to remove air. Utility Model Content

[0003] The purpose of this invention is to provide a liquid disc filter that can expel air but does not carry out the filtered liquid.

[0004] To achieve the above objectives, an embodiment of this utility model designs a liquid disc filter, comprising:

[0005] First outer shell;

[0006] The second outer shell is connected to the first outer shell via a snap-fit ​​structure;

[0007] A liquid microporous filter membrane is disposed between the first outer shell and the second outer shell;

[0008] An exhaust valve branch device is provided on one side of the first housing; the exhaust valve branch device exhausts air when the liquid microporous filter membrane is in operation.

[0009] Furthermore, in the liquid disc filter of this utility model, a liquid inlet is provided on a preset axis of the first housing; the liquid inlet extends all the way to the top of the liquid microporous filter membrane.

[0010] Furthermore, in the liquid disc filter of this utility model, a protrusion is provided on the edge of the first housing, and the protrusion is engaged in a groove provided on the second housing.

[0011] Furthermore, in the liquid disc filter described in this utility model, a gasket sealing ring is placed below the first housing and on the second housing to seal the first housing and the second housing.

[0012] Furthermore, in the liquid disc filter of this utility model, a liquid outlet is provided on a preset axis of the second housing; the liquid outlet extends all the way to below the liquid microporous filter membrane.

[0013] Furthermore, in the liquid disc filter described in this utility model, the liquid microporous filter membrane is a hydrophilic polyvinylidene fluoride (PVDF) membrane.

[0014] Furthermore, in the liquid disc filter of this utility model, below the liquid microporous filter membrane, several water expansion grooves are arranged on the edge plane of the second housing along the central axis of the second housing.

[0015] Furthermore, in the liquid disc filter of this utility model, the exhaust valve branch device further includes:

[0016] An exhaust valve branch is provided in connection with the first housing.

[0017] A stopcock is threaded onto the upper part of the exhaust valve branch;

[0018] An exhaust valve sealing ring is provided between the plug and the exhaust valve branch.

[0019] Furthermore, in the liquid disc filter of this utility model, a sealing ring fixing groove is opened on the exhaust valve branch, and the exhaust valve sealing ring is placed in the sealing ring fixing groove.

[0020] Furthermore, in the liquid disc filter of this utility model, a bypass pipe is provided on the side of the exhaust valve branch; the bypass pipe communicates with the interior of the first housing.

[0021] Compared with the prior art, the embodiments of this utility model employ a first outer shell connected to a second outer shell via a snap-fit ​​structure; a liquid microporous filter membrane is disposed between the first and second outer shells; an exhaust valve branch device is disposed on one side of the first outer shell; the exhaust valve branch device exhausts the liquid microporous filter membrane during operation; it enables the separate liquid collection branch to be set on the exhaust valve, facilitating the connection of a hose to collect the discharged gas and liquid; a sealing ring is provided on the exhaust valve to ensure that the liquid discharged from the filter does not leak from the tightened thread of the exhaust valve during the exhaust process; at the same time, the snap-fit ​​structure connection avoids the traditional welding difficulties between polyvinylidene fluoride (PVDF) material and polypropylene material, achieving complete encapsulation of the hydrophilic PVDF membrane inside the polypropylene shell. This enables large-scale production and application of similar products. The exhaust valve core adopts a threaded sealing structure, ensuring the overall sealing of the disc filter when the plug is tightened. When the plug is unscrewed, it can be connected through the pipeline of the exhaust valve branch for convenient collection of discharged gas and liquid. The sealing ring set in a suitable position on the exhaust valve core ensures that during the exhaust process, the discharged liquid and gas can only be discharged from the exhaust valve branch, preventing possible environmental damage from the discharged liquid and gas. It solves the technical problem in existing hydrophilic polyvinylidene fluoride (PVDF) membrane liquid disc filters that require purging during use, but during purging, filtered liquid will be carried out from the purging valve pipeline, causing difficulty in removing air. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 for Figure 1 A left-view diagram;

[0024] Figure 3 This is a schematic diagram of direction AA. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0026] The embodiments of this utility model relate to a liquid disc filter, such as... Figures 1-3 As shown, it includes:

[0027] In this embodiment of the liquid disc filter, a first outer shell 1 is provided as the upper shell;

[0028] The first outer shell 1 is connected to the second outer shell 4 via a snap-fit ​​structure; in this embodiment, the liquid disc filter is provided with the second outer shell 4 as the lower shell; the first outer shell 1 and the second outer shell 4 are connected by a snap-fit ​​structure, which facilitates disassembly.

[0029] A liquid microporous filter membrane 6 is disposed between the first outer shell 1 and the second outer shell 4; the liquid microporous filter membrane 6 is used for filtration.

[0030] An exhaust valve branch device 10 is provided on one side of the first housing 1. The exhaust valve branch device 10 vents air when the liquid microporous filter membrane is in operation. This embodiment enables the addition of a liquid collection branch on the exhaust valve, facilitating connection of a hose to collect the discharged gas and liquid. The exhaust valve branch device 10 ensures that during the venting process, the liquid discharged from the filter does not leak from the tightened thread of the exhaust valve. Simultaneously, the snap-fit ​​connection avoids the traditional welding difficulties between polyvinylidene fluoride (PVDF) and polypropylene materials, achieving complete encapsulation of the hydrophilic PVDF membrane within the polypropylene housing, enabling large-scale production and application of similar products. The exhaust valve core adopts a threaded sealing structure, ensuring the overall sealing of the disc filter when the plug is tightened. When unscrewed, the exhaust valve branch pipe can be connected for easy collection of discharged gas and liquid. A sealing ring at a suitable position on the exhaust valve core ensures that during exhaust, the discharged liquid and gas can only be discharged from the exhaust valve branch, preventing potential environmental damage. This solves the technical problem in existing hydrophilic polyvinylidene fluoride (PVDF) membrane liquid disc filters where, during use, the filter needs to be emptied, but during evacuation, filtered liquid can be carried out through the evacuation valve pipe, causing difficulty in removing air.

[0031] To achieve the above-mentioned technical effects, the liquid disc filter in this embodiment, such as... Figures 1-3 As shown, a liquid inlet 11 is provided on a predetermined axis of the first housing 1; the liquid inlet 11 extends above the liquid microporous filter membrane 6. The liquid inlet 11 is used for feeding.

[0032] To achieve the above-mentioned technical effects, the liquid disc filter in this embodiment, such as... Figures 1-3 As shown, a protrusion 19 is provided on the edge of the first outer shell 1, and the protrusion 19 is engaged in a groove 12 provided on the second outer shell 4; the protrusion 19 and the groove 12 form a snap-fit ​​structure. The first outer shell 1 and the second outer shell are connected together.

[0033] To achieve the above-mentioned technical effects, the liquid disc filter in this embodiment, such as... Figures 1-3 As shown, a gasket sealing ring 13 is placed on the second outer shell 4 below the first outer shell 1 to seal the first outer shell 1 and the second outer shell 4.

[0034] To achieve the above-mentioned technical effects, the liquid disc filter in this embodiment, such as... Figures 1-3 As shown, a liquid outlet 14 is provided on a predetermined axis of the second housing 4; the liquid outlet 14 extends to below the liquid microporous filter membrane 6. The liquid outlet 14 is used for discharging liquid.

[0035] To achieve the above-mentioned technical effects, the liquid disc filter in this embodiment, such as... Figures 1-3 As shown, the liquid microporous filter membrane 6 is a hydrophilic polyvinylidene fluoride (PVDF) membrane.

[0036] To achieve the above-mentioned technical effects, the liquid disc filter in this embodiment, such as... Figures 1-3 As shown, below the liquid microporous filter membrane 6, several water expansion grooves 15 are arranged along the central axis of the second housing 4 on the edge plane of the second housing 4. The water expansion grooves 15 are mainly used to fix the liquid microporous filter membrane 6.

[0037] To achieve the above-mentioned technical effects, the liquid disc filter in this embodiment, such as... Figures 1-3 As shown, the exhaust valve branch device 10 also includes:

[0038] An exhaust valve branch 3 is connected to the first outer casing 1;

[0039] A plug 2 is threaded onto the upper part of the exhaust valve branch 3; the plug 2 blocks the exhaust valve branch 3.

[0040] An exhaust valve sealing ring 16 is installed between the plug 2 and the exhaust valve branch 3. The exhaust valve sealing ring 16 seals the plug 2 and the exhaust valve branch 3.

[0041] To achieve the above-mentioned technical effects, the liquid disc filter in this embodiment, such as... Figures 1-3 As shown, a sealing ring fixing groove 17 is opened on the exhaust valve branch 3, and an exhaust valve sealing ring 16 is placed in the sealing ring fixing groove 17.

[0042] To achieve the above-mentioned technical effects, the liquid disc filter in this embodiment, such as... Figures 1-3 As shown, a bypass pipe 7 is provided on the side of the exhaust valve branch 3; the bypass pipe 7 is connected to the inside of the first housing 1.

[0043] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A liquid disc filter, characterized in that, include: First outer shell; The second outer shell is connected to the first outer shell via a snap-fit ​​structure; A liquid microporous filter membrane is disposed between the first outer shell and the second outer shell; An exhaust valve branch device is provided on one side of the first housing; the exhaust valve branch device exhausts air when the liquid microporous filter membrane is in operation.

2. The liquid disc filter according to claim 1, characterized in that, A liquid inlet is provided on a predetermined axis of the first outer shell; the liquid inlet extends all the way to the top of the liquid microporous filter membrane.

3. The liquid disc filter according to claim 2, characterized in that, A protrusion is provided on the edge of the first outer shell, and the protrusion is engaged in a groove provided on the second outer shell.

4. The liquid disc filter according to claim 1, characterized in that, A gasket sealing ring is placed on the second housing below the first housing to seal both the first housing and the second housing.

5. The liquid disc filter according to claim 4, characterized in that, A liquid outlet is provided on a predetermined axis of the second housing; the liquid outlet extends to below the liquid microporous filter membrane.

6. The liquid disc filter according to claim 1, characterized in that, The liquid microporous filter membrane is a hydrophilic polyvinylidene fluoride (PVDF) membrane.

7. The liquid disc filter according to claim 1, characterized in that, Below the liquid microporous filter membrane, several water expansion grooves are arranged on the edge plane of the second housing along the central axis of the second housing.

8. The liquid disc filter according to claim 6, characterized in that, The exhaust valve branch device further includes: An exhaust valve branch is provided in connection with the first housing. A stopcock is threaded onto the upper part of the exhaust valve branch; An exhaust valve sealing ring is provided between the plug and the exhaust valve branch.

9. The liquid disc filter according to claim 8, characterized in that, A sealing ring fixing groove is opened on the exhaust valve branch, and the exhaust valve sealing ring is placed in the sealing ring fixing groove.

10. The liquid disc filter according to claim 9, characterized in that, A bypass pipe is provided on the side of the exhaust valve branch; the bypass pipe communicates with the interior of the first housing.

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