A filtration device suitable for test tubes of various sizes

Abstract

This utility model discloses a filtration device applicable to test tubes of various sizes, which includes a connected main body and a conical part. Since the conical part can be snapped into test tubes of different sizes, the filtration device can be used without the need for cooperation with other devices. The main body has filtration areas on the side walls and bottom. Compared with existing filtration devices, the filtration areas are larger, which can effectively improve the filtration speed.

Description

Technical Field

[0001] This utility model belongs to the technical field of chemical experimental apparatus, specifically relating to a filtration device suitable for test tubes of various sizes. Background Technology

[0002] In automated sample loading equipment, due to the small inner diameter of the liquid sample loading pipeline, if the liquid to be tested or purified contains sample residue, the residue is easily sucked into the pipeline and can easily cause blockage at the sample loading port or valve port, resulting in incomplete sample loading and affecting the accuracy of the data.

[0003] To overcome the above problems, the solution to be tested or purified needs to be filtered. Traditional filtration devices are filter paper or needle filters, which have low filtration speeds and usually require the use of glass funnels, vacuum filters, or syringes. Utility Model Content

[0004] The purpose of this invention is to provide a filtration device suitable for test tubes of various sizes, which can be placed directly on the test tubes and is applicable to a variety of test tubes of different sizes.

[0005] The technical solution of this utility model is as follows:

[0006] A filtration device suitable for test tubes of various sizes includes a connected conical section and a main body;

[0007] The conical part has a flared end and a narrow end; the main body is barrel-shaped, with the side walls and bottom of the main body serving as the filtration area, and the top of the main body being an open end. The main body is sealed to the narrow end through the top end.

[0008] In some preferred embodiments, the sidewalls of the main body form several outward protrusions along the axial direction of the main body, and the protrusions are elongated.

[0009] In some preferred embodiments, the conical portion is also provided with a filtering area.

[0010] In some preferred embodiments, the filtering device is made of a filter screen. More preferably, the filter screen is a metal filter screen or a plastic filter screen. Even further, the pore size of the filter screen is 38~76μm.

[0011] In some preferred embodiments, the maximum outer diameter of the tapered portion is 36-72 mm, the outer diameter of the main body is 11-22 mm, and the length of the main body is 60-90 mm.

[0012] In some preferred embodiments, the tapered portion is integrally formed with the main body, fixedly connected, or detachably connected.

[0013] This utility model has at least the following beneficial effects:

[0014] 1. The filtration device provided by this utility model includes a main body and a conical part. Since the conical part can be snapped into test tubes of different sizes, the filtration device can be used without the need for cooperation with other devices. The main body has filtration areas on the side walls and bottom. Compared with existing filtration devices, the filtration area is larger and can effectively improve the filtration speed.

[0015] 2. In some preferred embodiments, the sidewalls of the main body form outward protrusions; in other preferred embodiments, the conical portion also has a filtration area; or, the entire filtration device is made of a filter screen. All of the above embodiments increase the filtration speed by further increasing the area of ​​the filtration area. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the filtration device provided in Example 1;

[0017] Figure 2 This is a schematic diagram showing the combination of the filtration device and the test tube provided in Example 1.

[0018] The reference numerals in the figure are: 1-filter device; 11-conical part; 111-narrow end; 12-main body; 121-recessed part. Detailed Implementation

[0019] The technical solution of this utility model will be further explained and described below through specific embodiments.

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] Unless otherwise expressly defined, in the claims, description and accompanying drawings of this utility model, the use of directional terms such as "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear" to indicate orientation or positional relationship is based on the orientation and positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.

[0022] Example 1

[0023] This embodiment provides a method such as Figure 1 The filter device shown is suitable for test tubes of various sizes and includes a connected conical section and a main body.

[0024] The tapered section serves as the filtration area, with its outer diameter gradually decreasing from top to bottom, forming a relatively flared end and a narrow end.

[0025] The main body is barrel-shaped, with an open top for sealing connection to the narrow end of the conical section. The side walls and bottom of the main body form the filtration area. Several outward-facing protrusions, elongated in shape, are formed along the axial direction of the main body's side walls. This design increases the side wall area, thereby improving the filtration speed, and also provides some longitudinal reinforcement to the structure.

[0026] In this embodiment, both the conical part and the main body are made of metal mesh. This arrangement makes the entire area of ​​the conical part and the main body a filtration area, thereby maximizing the area of ​​the filtration area and improving the filtration speed.

[0027] In this embodiment, the tapered portion and the main body are sealed together by welding. In other possible embodiments, the tapered portion and the main body can also be detachably connected by means of threaded connection or other means, and sealed between the tapered portion and the main body by interference fit or by setting a sealing ring; or, the main body and the tapered portion can be integrally formed.

[0028] Furthermore, in this embodiment, the filter screen has a pore size of 38 μm, the maximum outer diameter of the tapered portion is 36 mm, the outer diameter of the main body is 11 mm, and the length of the main body is 60 mm.

[0029] Figure 2 The diagram illustrates how the filter device is fitted to the test tube. The main body of the filter device is located inside the test tube, and the tapered part of the filter device engages with the opening of the test tube. Since the tapered part has a variable outer diameter, it can be used with test tubes of various sizes.

[0030] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model patent and the contents of the specification should still fall within the scope of the present utility model.

Claims

1. A filtration device suitable for test tubes of various sizes, characterized in that, Includes a connected conical section and a main body; The conical portion has a flared end and a narrow end; the main body is barrel-shaped, the side walls and bottom of the main body are filtration areas, the top end of the main body is an open end, and the main body is sealed to the narrow end through the top end.

2. The filtration device as described in claim 1, characterized in that, The sidewall of the main body has several outward protrusions along the axial direction of the main body, and the protrusions are elongated.

3. The filtration device as described in claim 1 or 2, characterized in that, The conical section is also provided with a filtration area.

4. The filtration device as described in claim 3, characterized in that, The filtration device is made of a filter screen.

5. The filtration device as described in claim 4, characterized in that, The filter screen can be a metal filter screen or a plastic filter screen.

6. The filtration device as claimed in claim 4, characterized in that, The filter screen has a pore size of 38–76 μm.

7. The filtration device as claimed in claim 1, characterized in that, The maximum outer diameter of the tapered portion is 36–72 mm, the outer diameter of the main body is 11–12 mm, and the length of the main body is 60–90 mm.

8. The filtration device as claimed in claim 1, characterized in that, The tapered portion is integrally formed with the main body, fixedly connected, or detachably connected.

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