Filtering device convenient for replacing filter membrane

Abstract

The utility model provides a filtering device convenient for replacing a filter membrane, and belongs to the technical field of filtering equipment. Comprising an upper cup body, a filter disc, a connector and a liquid storage bottle which are sequentially connected from top to bottom. The side surface of the connector is connected with a suction filtration interface; the filtering disc is of an annular structure, a clamping groove is formed in the inner wall of the filtering disc, a filtering pulling plate is arranged in the clamping groove, an opening which corresponds to the clamping groove and is used for disassembling and assembling the filtering pulling plate is formed in one side of the filtering disc, a sealing gasket is arranged on the inner wall of the opening, and the sealing gasket is connected with the clamping groove. A pull ring is fixed to the side, exposed out of the filtering disc, of the filtering pulling plate. The filter element can be flexibly replaced according to requirements, and the overall using effect is good.

Description

A filtration device that facilitates membrane replacement Technical Field

[0001] This utility model relates to the field of filtration equipment technology, and in particular to a filtration device that facilitates the replacement of filter membranes. Background Technology

[0002] A disposable vacuum filtration device is a commonly used filtration device primarily for biological laboratories or medical fields. As shown in Figure 1, it generally includes an upper cup body 01, a connector 02 fixed to the bottom of the upper cup body 01, a filtration port 04 on one side of the connector 02, and a sterile storage bottle 05 for holding the filtered liquid fitted to the bottom of the connector 02. A filter membrane 03 is fixed to the bottom surface of the upper cup body 01. Therefore, by connecting a vacuum mechanism through the filtration port 04, the solution in the upper cup body 01 can be quickly filtered through the filter membrane 03 into the sterile storage bottle 05.

[0003] However, in actual use, the filter membrane 03 on the bottom surface of the upper cup body 01 is a single piece, which makes it inconvenient to replace different types of filter membranes according to experimental needs, resulting in certain limitations in actual use and requiring further optimization.

[0004] Therefore, this application provides a filtration device that facilitates membrane replacement to meet the requirements. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a filtration device that facilitates the replacement of filter membranes, thereby solving the problem that existing disposable vacuum filtration devices are not convenient for replacing filter membranes according to actual needs.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A filtration device that facilitates membrane replacement includes an upper cup body, a filter plate, a connector, and a liquid storage bottle connected sequentially from top to bottom.

[0008] The connector has a filter port connected to its side;

[0009] The filter disc has a ring-shaped structure. A slot is provided on the inner wall of the filter disc, and a filter pull plate is provided in the slot. An opening corresponding to the slot is provided on one side of the filter disc for the filter pull plate to be disassembled and assembled. A sealing gasket is provided on the inner wall of the opening. A pull ring is fixed on the side of the filter pull plate that protrudes from the filter disc.

[0010] Optionally, the filter plate has a vertical filter channel in the middle, and a filter ring is detachably installed in the filter channel. A core filter membrane is provided in the middle of the filter ring.

[0011] Optionally, the filter channel has a mounting slot on the side away from the pull ring for horizontal insertion of the filter ring.

[0012] Optionally, the core filter membrane is placed in the middle of the filter ring, and a limiting ring is also fitted on the filter ring. The limiting ring is inserted into the middle of the filter ring and cooperates with the filter ring to clamp and fix the core filter membrane.

[0013] Optionally, a threaded interface is provided in the middle of the upper end face of the filter disc for the bottom of the upper cup body to be inserted, and the filter disc is threadedly inserted into the bottom of the upper cup body through the threaded interface.

[0014] Optionally, an abutment ring is fixed around the bottom port edge of the upper cup body, and the abutment ring abuts against the upper port of the filter disc to form a sealed connection.

[0015] Optionally, the top of the upper cup body is provided with a liquid inlet and fitted with an upper cup lid.

[0016] Optionally, the end of the filter interface away from the connector is provided with multiple connection ports.

[0017] Optionally, the multiple connection ports form multiple levels of ports with different inner diameters.

[0018] Compared with the prior art, this utility model has at least the following beneficial effects:

[0019] In the above solution, thanks to the cooperation of the filter disc, filter plate, and filter ring, different types of core filter membranes can be easily fixed in the middle of the filter ring. Then, the upper cup body is inserted into the filter disc through the thread at the lower port to form a sealed connection, which makes it easy for staff to replace the core filter membrane according to their needs, making it flexible to use.

[0020] In the above solution, thanks to the multi-stage connection port at the end of the filter interface, it can be easily adapted to hose connection equipment with different inner diameters, and has strong versatility.

[0021] In summary, this device not only allows for flexible replacement of filter elements as needed, but also adapts to equipment hoses with different inner diameters, resulting in excellent overall performance. Attached Figure Description

[0022] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0023] Figure 1 is a schematic diagram of the structure of a disposable vacuum filtration device in the prior art;

[0024] Figure 2 is a schematic diagram of the structure of this utility model;

[0025] Figure 3 is a structural schematic diagram of the upper cup body and connector in this utility model;

[0026] Figure 4 is an enlarged schematic diagram of the structure at point A in Figure 3;

[0027] Figure 5 is a schematic diagram of the cross-sectional structure of the filter plate;

[0028] Figure 6 is a schematic diagram showing the structural breakdown of the filter disc.

[0029] Figure label:

[0030] 01. Upper cup body; 02. Connector; 03. Filter membrane; 04. Vacuum filtration interface; 05. Sterile storage bottle; 1. Upper cup body; 101. Upper cup lid; 102. Abutment ring; 2. Connector; 3. Filter plate; 301. Threaded part; 4. Vacuum filtration interface; 401. Connection port; 5. Storage bottle; 6. Filter pull plate; 601. Pull ring; 602. Filter channel; 603. Mounting slot; 7. Filter ring; 701. Limiting ring; 8. Core filter membrane.

[0031] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0032] The following is a detailed description of a filtration device for easy membrane replacement provided by the present invention, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0033] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0034] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0035] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0036] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0037] As shown in Figures 2 and 3, an embodiment of this utility model provides a filtration device that facilitates filter membrane replacement, comprising an upper cup body 1, a filter disc 3, a connector 2, and a liquid storage bottle 5 connected sequentially from top to bottom; a suction filtration interface 4 is connected to the side of the connector 2; the filter disc 3 has an annular structure, and a slot is provided on the inner wall of the filter disc 3, in which a filter extraction plate 6 is provided; an opening corresponding to the slot is provided on one side of the filter disc 3 for disassembling and assembling the filter extraction plate 6, and a sealing gasket is provided on the inner wall of the opening; a pull ring 601 is fixed on the side of the filter extraction plate 6 that protrudes outside the filter disc 3.

[0038] In this embodiment of the invention, the upper cup body 1 is used to hold the liquid to be filtered, the filter plate 3 is used for filtration, and the connector 2 and the suction port 4 are used to connect an external suction filtration device to provide suction power. When the filtration device provided by this invention is in use, after connecting the external suction filtration device, the air in the connector 2 and the liquid storage bottle 5 is drawn away to create a negative pressure, causing the liquid in the upper cup body 1 to be filtered through the filter plate 3. The filtered liquid flows to the liquid storage bottle 5, while impurities remain above the filter plate 3. Specifically, the sealing gasket can be made of rubber.

[0039] The filter disc 3 is equipped with a filter pull plate 6. Based on the slots and corresponding openings on the inner wall of the filter disc 3, a drawer-style pull-out structure is formed. A sealing gasket is installed on the inner wall of the opening, ensuring both a tight seal and making filter pull plate 6 replacement quick and convenient. When the filter pull plate 6 is inside the filter disc 3, the wall of the filter pull plate 6 is sealed to the wall of the opening; when the filter pull plate 6 is pulled out of the filter disc 3, the filter element can be quickly replaced.

[0040] The filtration device provided by this utility model is easy to replace with a filter membrane. The filter element can be flexibly replaced according to needs, and the overall performance is good.

[0041] In one embodiment of this utility model, the filter plate 6 has a vertical filter channel 602 in the middle, and a filter ring 7 is detachably installed in the filter channel 602. A core filter membrane 8 is provided in the middle of the filter ring 7.

[0042] In the above solution, thanks to the cooperation of the filter disc 3, the filter plate 6, and the filter ring 7, different types of core filter membranes 8 can be easily fixed in the middle of the filter ring 7, and then inserted into the filter disc 3 through the thread of the lower port of the upper cup body 1 to form a sealed connection. This makes it convenient for staff to replace the core filter membrane 8 according to their needs, and the solution is flexible in use.

[0043] In one embodiment of this utility model, a mounting slot 603 for horizontal insertion of the filter ring 7 is provided on the side of the filter channel 602 away from the pull ring 601, facilitating quick installation of the filter ring 7. Specifically, during replacement, the filter ring 7 can be first removed from the filter pull plate 6, the core filter membrane 8 can be replaced, and then the filter ring 7 can be installed. Since the mounting slot 603 is located on the side away from the pull ring 601, that is, opposite to the opening of the connector 2, the installation slot 603 will not affect the sealing of the opening.

[0044] In one embodiment of this invention, the core filter membrane 8 is placed in the middle of the filter ring 7, and a limiting ring 701 is also fitted onto the filter ring 7. The limiting ring 701 is engaged with the middle of the filter ring 7, forming a clamping and fixing mechanism for the core filter membrane 8. Specifically, the limiting ring 701 is used to press against the upper part of the core filter membrane 8 to lock the core filter membrane 8 in place.

[0045] In one embodiment of this utility model, a threaded interface is provided in the middle of the upper end face of the filter disc 3 for the bottom of the upper cup body 1 to be inserted. The filter disc 3 and the bottom of the upper cup body 1 are connected by a threaded joint through the threaded interface. The threaded interface enables sealing and quick assembly / disassembly.

[0046] In one embodiment of this utility model, an abutment ring 102 is fixedly attached around the bottom port edge of the upper cup body 1, and the abutment ring 102 abuts against the upper port of the filter disc 3 to form a sealed connection. The abutment ring 102 further improves the sealing performance; specifically, the abutment ring 102 can be made of rubber.

[0047] In one embodiment of this utility model, the top of the upper cup body 1 is provided with a liquid inlet and is fitted with an upper cup lid 101, which facilitates the pouring of liquid to be filtered.

[0048] In one embodiment of this invention, the end of the filter port 4 furthest from the connector 2 is provided with multiple connection ports 401. These multiple connection ports 401 form ports with different inner diameters, which can be adapted to hoses of different devices, thus improving the versatility of this device.

[0049] In the above solution, thanks to the multi-stage connection port 401 at the end of the filtration interface 4, it can be easily adapted to hose connection equipment with different inner diameters, and has strong versatility.

[0050] Furthermore, in one embodiment provided by this utility model, multiple connection ports 401 form ports with different inner diameters at multiple levels.

[0051] In some specific embodiments, the bottom of the connector 2 is threadedly fitted with a storage bottle 5 for holding the filtered liquid, achieving a seal while facilitating disassembly and assembly.

[0052] Specifically, a filter disc 3 is fixed to the top of the connector 2. A filter tray 6 is horizontally inserted into the filter disc 3. A vertical filter channel 602 is opened in the middle of the filter tray 6. A filter ring 7 is detachably installed in the filter channel 602. A core filter membrane 8 is set in the middle of the filter ring 7. The bottom port of the upper cup body 1 is threaded into the top of the filter disc 3 and docks with the filter channel 602. As shown in Figure 4, a threaded interface for the bottom of the upper cup body 1 is opened in the middle of the upper end face of the filter disc 3. The inner wall of the opening of the upper end face of the filter disc 3 is constructed with a threaded part 301, which forms a threaded insertion fit with the bottom of the upper cup body 1. An abutment ring 102 is fixed around the edge of the bottom port of the upper cup body 1. The abutment ring 102 abuts with the upper port of the filter channel 602 to form a sealed docking.

[0053] As shown in Figures 3 and 5, an opening is provided on one side of the filter disc 3 to expose the edge of the filter pull plate 6. A pull ring 601 is fixed in the middle of the side of the filter pull plate 6 that is exposed outside the filter disc 3, making it easy to pull the filter pull plate 6. The filter channel 602 is provided on the side away from the pull ring 601 to provide a mounting slot 603 for the horizontal insertion of the filter ring 7, and the core filter membrane 8 is placed in the middle of the filter ring 7.

[0054] As shown in Figure 6, a limiting ring 701 is fitted on the filter ring 7. The limiting ring 701 is further inserted into the middle of the filter ring 7, and together with the filter ring 7, it forms a clamping and fixing of the core filter membrane 8.

[0055] The working principle of the technical solution provided by this utility model is as follows:

[0056] This filtration device, which facilitates membrane replacement, allows for easy fixation of different types of core filter membranes 8 to the center of the filter ring 7 by pulling the filter plate 6 through the cooperation of the filter disc 3, filter slide 6, and filter ring 7. The upper cup body 1 is then threaded into the filter disc 3 through the lower port, forming a sealed connection. This allows for convenient replacement of the core filter membrane 8 as needed, offering flexibility in use. Furthermore, the multi-stage connection port 401 at the end of the suction filter interface 4 can be used to adapt to hose connection devices with different inner diameters, providing strong versatility.

[0057] In summary, this device not only allows for flexible replacement of filter elements as needed, but also adapts to equipment hoses with different inner diameters, resulting in excellent overall performance.

[0058] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0059] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A filtration device that facilitates membrane replacement, characterized in that, The device includes an upper cup body, a filter plate, a connector, and a liquid storage bottle connected sequentially from top to bottom. A filtration port is connected to the side of the connector. The filter plate has a ring-shaped structure, and a slot is provided on the inner wall of the filter plate. A filter slide plate is installed in the slot. An opening corresponding to the slot is provided on one side of the filter plate for assembling and disassembling the filter slide plate. A sealing gasket is provided on the inner wall of the opening. A pull ring is fixed to the side of the filter slide plate that protrudes from the filter plate.

2. The filtration device for easy membrane replacement according to claim 1, characterized in that, The filter plate has a vertical filter channel in the middle, and a filter ring is detachably installed in the filter channel. A core filter membrane is set in the middle of the filter ring.

3. The filtration device for easy membrane replacement according to claim 2, characterized in that, The filter channel has an installation slot on the side away from the pull ring for horizontal insertion of the filter ring.

4. A filtration device for easy membrane replacement according to claim 2, characterized in that, The core filter membrane is placed in the middle of the filter ring, and a limiting ring is also fitted on the filter ring. The limiting ring is inserted into the middle of the filter ring and cooperates with the filter ring to clamp and fix the core filter membrane.

5. A filtration device for easy membrane replacement according to claim 1, characterized in that, The filter disc has a threaded interface in the middle of its upper surface for the bottom of the upper cup body to be inserted into. The filter disc is threadedly inserted into the bottom of the upper cup body through the threaded interface.

6. A filtration device for easy membrane replacement according to claim 1, characterized in that, An abutment ring is fixed around the bottom port edge of the upper cup body, and the abutment ring abuts against the upper port of the filter disc to form a sealed connection.

7. A filtration device for easy membrane replacement according to claim 1, characterized in that, The upper cup body has a liquid inlet at the top and is fitted with an upper cup lid.

8. A filtration device for easy membrane replacement according to claim 1, characterized in that, The end of the filter interface away from the connector has multiple connection ports.

9. A filtration device for easy membrane replacement according to claim 8, characterized in that, The multiple connection ports form multiple levels of ports with different inner diameters.

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