Disposable vacuum filter connected with cover

Abstract

The utility model relates to a disposable vacuum filter connected with a cover. The disposable vacuum filter comprises an upper container, a connector and a receiving bottle, a hinged cover body is arranged at the top of the upper container, and a filter membrane is arranged in the upper container and is hermetically connected with the connector through an inlay structure. A vacuum connecting port and a Luer taper are arranged on the side face of the connector, filter cotton is arranged in the connector to prevent foreign matter pollution, and a sealing gasket is arranged between the connector and a receiving bottle to prevent leakage. A plurality of stages of ribs are designed on the connecting seat to support the filter membrane and guide the sample liquid to flow into the receiving bottle. The outer side of the receiving bottle is provided with a concave surface and anti-slip lines, so that the holding is convenient and the slipping risk is reduced. The upper container is made of transparent materials, and the filtering volume can be observed conveniently through scale marks on the two sides. The design has the advantages that the pollution risk is reduced, various vacuum devices are adapted, the collapse of the filtering membrane is effectively prevented, and the filtering progress is easy to observe.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically to a disposable vacuum filter with a continuous cover. Background Technology

[0002] In biochemical experiments and biological fluid analysis, filters are typically used to filter mixed solutions. A filter usually consists of an upper container, a connector, and a receiving bottle, from top to bottom. During use, a microporous membrane is installed at the bottom of the upper container. The connector usually has a vacuum connection port on its side, and the upper and lower containers are sealed together via the connector. To use, the sample to be separated is added to the upper container, and the connector is connected to a vacuum device. The negative vacuum pressure forces the sample in the upper container to flow through the microporous membrane at the bottom of the upper container into the receiving bottle, accelerating the fluid flow through the microporous membrane.

[0003] Commonly used vacuum filters, such as the one shown in the utility model patent CN103212228B, lack a lid on the upper container, making it easy for dust and other airborne particles to adhere to the sample inside, affecting experimental results. Another example is the disposable microporous membrane filter provided by the utility model patent CN201894879U. Although its structure includes a lid, the operator needs to remove the lid during use and then pour the sample into the upper container. The lid is still easily contaminated by other substances when placed on the table, reducing the success rate of the experiment. Utility Model Content

[0004] The purpose of this utility model is to provide a disposable vacuum filter with a cover, which solves the technical problems of traditional vacuum filters not having a cover structure and the cover structure being easily contaminated when placed on a table.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A disposable vacuum filter with a cover, comprising the following components arranged sequentially from top to bottom:

[0007] The upper container has an opening on its top surface, and a cover is hinged to the outside of the upper container at the opening. A filter membrane is installed inside the upper container.

[0008] The connector has a vacuum connection port on its side;

[0009] A receiving bottle, wherein the receiving bottle is detachably connected to the connector.

[0010] Furthermore, the top surface of the cover extends outward with a boss, and the boss is rotatably provided with a connecting piece. The connecting piece is hinged to the upper container, and the cover and the upper container are connected by threads.

[0011] Furthermore, the connector is provided with a connecting seat on the top, and a convex ring is provided circumferentially on the top surface of the connecting seat. The upper container is provided with a groove that adapts to the convex ring, and the groove and the convex ring are in an interlocking structure.

[0012] Furthermore, a gap is left between the convex ring and the groove and the inner side of the upper container, and the filter membrane is disposed within the gap.

[0013] Furthermore, the vacuum connection port is also provided with a Luer connector, which is bent downward and has filter cotton inside. The outer side of the Luer connector is provided with vacuum connection ports of various specifications in a stepped configuration.

[0014] Furthermore, the connector and the outer side of the receiving bottle are detachably connected by threads. The upper container is provided with a connecting tube that passes through the connector and is inserted into the receiving bottle. The connecting tube is inclined inward, and a sealing gasket is provided between the thread and the connector.

[0015] Furthermore, the top surface of the connecting seat is densely arranged with ribs in a circumferential array. The ribs are of uniform height and include primary ribs that penetrate the diameter of the upper container and secondary and / or tertiary ribs that are offset from the primary ribs along the radial direction of the upper container.

[0016] Furthermore, the staggered ribs are provided with grooves that are inclined downwards along the outer periphery of the upper container towards its axis, and the ends of the grooves are connected to the connecting pipes.

[0017] Furthermore, the outer side of the receiving bottle is provided with a concave surface, and the concave surface and the outer side of the receiving bottle are provided with anti-slip texture.

[0018] Furthermore, the upper container is transparent and has scale lines on both sides.

[0019] The advantages and beneficial effects of this utility model are as follows:

[0020] 1. The vacuum filter with a hinged cover of this utility model features a hinged cover on the top of the upper container, avoiding the risk of contamination from placing the cover on a tabletop. A filter membrane is installed inside the upper container, and an inlay structure is formed between the cover and the upper container. The inlay structure is then welded from the outside, simultaneously securing the filter membrane and sealing the upper container and the connector.

[0021] 2. The vacuum connection port on the side of the connector, combined with the Luer connector and filter cotton, not only facilitates the connection of the vacuum source and adapts to different specifications of vacuum equipment, but also effectively prevents foreign objects in the vacuum equipment from flowing back into the receiving bottle and causing contamination. A sealing gasket is placed between the thread and the connector to prevent liquid leakage.

[0022] 3. The connector is equipped with staggered primary, secondary and tertiary ribs of the same height, so that each rib is in contact with the filter membrane to prevent the filter membrane from collapsing. Grooves are provided between the ribs to help the sample liquid flow from the connecting tube into the receiving bottle.

[0023] 4. The ergonomic design of the concave surface and anti-slip texture on the outside of the receiving bottle increases friction when held, reducing the risk of slipping. The upper container has a transparent structure with graduations on both sides, allowing users to easily observe the volume of the filtered sample and judge the filtration progress. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0026] Figure 3 This is an enlarged structural schematic diagram of point A in this utility model;

[0027] Figure 4 This is a partial structural schematic diagram of the reinforcing bar of this utility model;

[0028] In the diagram: upper container 10, lid 11, filter membrane 12, boss 13, connecting piece 14, hinge 15, groove 16, scale line 17;

[0029] 20 Connector, 21 Vacuum connection port, 22 Connector seat, 23 Luer connector, 24 Filter cotton, 25 Step, 26 Connecting tube, 27 Sealing gasket, 28 Groove, 29 Primary rib, 291 Secondary rib, 292 Tertiary rib;

[0030] Receiver bottle 30, concave surface 31, anti-slip texture 32. Detailed Implementation

[0031] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0032] Example

[0033] This utility model provides a disposable vacuum filter with a cap, the structure of which includes:

[0034] Upper container 10: It has an open top and is hinged to a cover 11, which contains a filter membrane 12. The cover 11 is designed with outwardly extending bosses 13 and is equipped with connecting pieces 14 that are hinged to the upper container 10 and connected tightly by threads. The upper container 10 is transparent and can be made of plastics such as polyethylene or polypropylene. It has scale lines 17 on both sides for observing the liquid level.

[0035] Connector 20: A vacuum connection port 21 is provided on the side, and a connecting seat 22 is on the top. The top surface of the connecting seat 22 is densely arrayed with ribs, including primary ribs 291 penetrating the diameter of the upper container 10, and secondary ribs 292 and tertiary ribs 293 staggered along the radial direction. These ribs slope downwards along the outer periphery of the upper container 10 to form grooves 29, the ends of which communicate with the connecting pipe 27. A convex ring 23 is circumferentially provided on the top surface of the connecting seat 22. The upper container 10 correspondingly has a groove 16 that adapts to the convex ring 23, forming an interlocking structure, with a filter membrane 12 placed within the gap. Furthermore, the vacuum connection port 21 is equipped with a Luer connector 24, which bends downwards and incorporates filter cotton 25. Various specifications of vacuum connection ports are provided on the outside via steps 26.

[0036] Receiving bottle 30: Detachably connected to connector 20, secured by threads, and equipped with an inclined connecting tube 27 that passes through and is inserted into connector 20. A sealing gasket 28 is provided between the threads and connector 20 to ensure a tight seal. The outer side of the receiving bottle 30 has a concave surface 31 and anti-slip texture 32 to enhance grip stability.

[0037] The working principle of this utility model is as follows: the filter membrane 12 is placed in a specific position inside the upper container 10, ensuring that it is within the interlocking gap between the cover 11 and the upper container 10, and that the filter membrane 12 is in contact with the ribs to prevent the filter membrane from collapsing. The user can observe and judge the volume of the filtered sample and the filtration progress according to the scale line 17. The connector 20 is connected to the upper container 10, and a sealing gasket 28 is set between the thread and the connector 20 to prevent liquid leakage; at the same time, the connecting tube 27 is tilted inward to facilitate the flow of sample liquid during use. When filtration is required, the cover 11 of the upper container 10 is opened, and then the liquid containing the sample to be filtered is poured into the upper container 10 through the opening on the top surface of the upper container 10. Since the cover 11 is hinged to the upper container 10, it does not need to be placed on the table, thus avoiding sample contamination due to a dirty table. The vacuum equipment is connected to the vacuum connection port 21 on the side of the connector 20 through the Luer connector 24. Various specifications of vacuum connection ports can be adapted to different specifications of vacuum equipment, facilitating a stable connection. The vacuum equipment is activated to create a negative pressure environment inside the upper container 10. Under the pressure difference, the sample liquid is filtered through the filter membrane 12, and the filtered liquid flows into the receiving bottle 30 through the connecting tube 27. During this process, the groove 29 formed between the staggered ribs on the connecting seat 22 assists the sample liquid to flow from the connecting tube 27 into the receiving bottle 30. As a preferred embodiment, the surface of the groove 29 is polished to an optical level during the manufacturing process.

[0038] After filtration is complete, the vacuum equipment can be shut off as needed. Then, connector 20 and receiving bottle 30 can be detached from the overall device for subsequent processing or analysis of the filtered sample. The entire process is simple and convenient to operate, effectively avoiding contamination and preventing liquid leakage. It also allows users to easily observe the filtration progress and perform handheld operation.

[0039] 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 technical principles 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 disposable lidding vacuum filter, characterized by, It comprises, from top to bottom, sequentially connected: upper container (10), the upper container top opening, opening from the outside of the upper container hinge cover (11), the upper container inside provided with filter membrane (12); connector (20), the connector side is communicated with vacuum connection port (21) is provided; receiving bottle (30), the receiving bottle with the connector can be detached.

2. According to claim 1, the cover vacuum filter is characterized by: the cover (11) top outwardly extending provided with boss (13), the boss rotating provided with connecting piece (14), the connecting piece with the upper container (10) hinge (15), the cover and the upper container through the thread connection.

3. According to claim 2, the cover vacuum filter is characterized by: the connector (20) top provided with connecting seat (22), the connecting seat top circumferential provided with convex ring (23), the upper container (10) is provided with the groove (16) of the convex ring, the groove and the convex ring between the inlay structure.

4. According to claim 3, the cover vacuum filter is characterized by: the convex ring (23) and the groove (16) and the upper container inside leave gap, the filter membrane (12) is arranged in the gap.

5. According to claim 4, the cover vacuum filter is characterized by: the vacuum connection port (21) is also provided with luer joint (24), the luer joint is downwardly curved and is provided with filter cotton (25) inside, the luer joint outside step (26) is provided with a plurality of specifications of vacuum connection port (21).

6. According to claim 5, the cover vacuum filter is characterized by: the connector (20) and receiving bottle (30) outside through thread detachable connection, the upper container (10) is provided with connecting pipe (27) that penetrates the connector and is inserted into the receiving bottle, the connecting pipe is inwardly inclined, the thread and the connector between the sealing pad (28) is arranged.

7. According to claim 6, the cover vacuum filter is characterized by: the top of the connecting seat (22) is circumferentially arranged with a plurality of ribs, the ribs have the same height, and the ribs include a first level rib (291) penetrating the diameter of the upper container and a second level rib (292) and / or a third level rib (293) disposed in the radial direction of the upper container and offset from the first level rib.

8. According to claim 7, the cover vacuum filter is characterized by: the offset ribs are inclined downward along the outer circumference of the upper container to the axis of the upper container, and the end of the groove (29) is in communication with the connecting pipe.

9. According to claim 8, the cover vacuum filter is characterized by: the outer side of the bottle body of the receiving bottle (30) is inwardly provided with a concave surface (31), and the outer side of the receiving bottle is provided with an anti-skid pattern (32).

10. According to claim 9, the cover vacuum filter is characterized by: the upper container (10) is a transparent body, and the two sides are provided with scale lines (17).

Images