Filtering device and centrifugal tube with filtering device

Abstract

The utility model discloses a filtering device. The filtering device comprises a filtering structure and a filtering bracket, the filter is characterized in that the filter structure is a circular plate-shaped structure; the filtering bracket comprises a limiting structure and a positioning structure; the limiting structure is fixedly connected with the positioning structure; the filtering structure is detachably connected with the limiting structure. A centrifugal tube with a filter device is characterized by comprising a centrifugal tube, a filter device and a filter device, the filtering device is positioned in the centrifugal tube; the filtering structure is detachably connected with the limiting structure; the filtering structure is positioned at one end of the filtering bracket facing the opening of the centrifugal tube. The centrifugal filter has the beneficial effects that the filter structure is supported by the filter bracket towards the direction of the pipe orifice, during high-speed centrifugal operation, under the action of centrifugal force, the connection between the filter structure and the filter bracket is tighter, no gap is formed between the filter structure and the filter bracket, and the filter structure cannot be separated from the filter bracket, so that the centrifugal filter operation is orderly carried out.

Description

Technical Field

[0001] The utility model belongs to the technical field of experimental instruments, and specifically relates to a filtering device and a centrifugal tube with the filtering device. Background Art

[0002] Centrifugal filtration technology is widely used in pathological diagnosis, biological experiments and other analytical links, and is an important link. The filter centrifuge tube is the key equipment of centrifugal filtration technology. The filter centrifuge tube generally includes an outer tube and an inner tube arranged inside the outer tube.

[0003] At present, a net or film with a filtering function is usually set at the outer tube away from the tube mouth. During high-speed centrifugal operation, the filter structure will move away from the tube mouth under the action of centrifugal force, causing the connection of the filter structure to loosen or even fall off, affecting the filtering effect.

[0004] In view of the above problems, the utility model provides a filtering device and a centrifuge tube with the filtering device. Utility Model Content

[0005] In order to overcome the problems mentioned in the background technology, the utility model provides a filtering device and a centrifugal tube with the filtering device. The device props up the filtering structure toward the tube mouth, and during high-speed centrifugal operation, under the action of large centrifugal force, the connection between the filtering structure and the filtering support is tighter.

[0006] A filtering device comprises a filtering structure and a filtering support; the filtering structure is a circular plate-shaped structure; the filtering support comprises a limiting structure and a positioning structure; the limiting structure and the positioning structure are fixedly connected; the filtering structure and the limiting structure are detachably connected.

[0007] A centrifuge tube with a filtering device comprises a centrifuge tube and a filtering device; the filtering device is located inside the centrifuge tube; the filtering device comprises a filtering structure and a filtering bracket; the filtering bracket comprises a limiting structure and a positioning structure; the limiting structure is fixedly connected to the positioning structure; the filtering structure is detachably connected to the limiting structure; the filtering structure is located at one end of the filtering bracket facing the opening of the centrifuge tube.

[0008] Furthermore, at least two limiting structures are provided at one end of the positioning structure; the limiting structures are arranged in a circumferential array at one end of the positioning structure.

[0009] Furthermore, the limiting structure includes a limiting arm and a limiting buckle; one end of the limiting arm is fixedly connected to the limiting buckle, and the other end is fixedly connected to the positioning structure.

[0010] Furthermore, the length of the limiting arm is equal to the thickness of the filtering structure.

[0011] Furthermore, the filter support further comprises a supporting structure; the supporting structure is located on a side of the positioning structure away from the limiting structure; and the supporting structure is fixedly connected to the positioning structure.

[0012] Furthermore, the support structures are arranged in a circumferential array on one side of the positioning structure away from the limiting structure.

[0013] Furthermore, the positioning structure is a circular plate-shaped structure; the outer diameter of the positioning structure is equal to the inner diameter of the centrifuge tube.

[0014] Furthermore, a through hole is provided inside the positioning structure.

[0015] Furthermore, a sealing cap is provided at the opening of the centrifuge tube; the sealing cap is detachably connected to the centrifuge tube.

[0016] The beneficial effects of the utility model are as follows: the filter bracket props up the filter structure toward the pipe mouth. During high-speed centrifugal operation, under the action of centrifugal force, the connection between the filter structure and the filter bracket is tighter, no gap will appear between the filter structure and the filter bracket, and the filter structure will not separate from the filter bracket, thereby ensuring the orderly progress of the centrifugal filtration operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a filtering device for realizing the utility model;

[0018] Figure 2 It is a front view of a filtering device for implementing the utility model;

[0019] Figure 3 for Figure 2 AA section view;

[0020] Figure 4 It is a structural schematic diagram of another filtering device for implementing the utility model;

[0021] Figure 5 It is a front view of another filtering device for implementing the utility model;

[0022] Figure 6 for Figure 5 BB section view;

[0023] Figure 7 It is a structural schematic diagram of a centrifuge tube for implementing the utility model;

[0024] Figure 8 for Figure 7 CC section view;

[0025] Fig. 9 It is a structural schematic diagram of another centrifuge tube for implementing the utility model;

[0026] Fig.10 for Fig. 9 CC section view;

[0027] In the figure, 1, filtering structure; 2, filtering bracket; 3, centrifuge tube; 4, sealing cap; 21, limiting structure; 22, positioning structure; 23, supporting structure; 211, limiting arm; 212, limiting buckle; 221, through hole. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The utility model can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be understood that the terms "length", "thickness", "up", "down", "front", "back", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In addition, in the description of the present invention, “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0031] Example 1

[0032] like Figure 1-6 A filtering device is shown, which includes a filtering structure 1 and a filtering support 2; the filtering structure 1 is a circular plate structure; the filtering support 2 includes a limiting structure 21 and a positioning structure 22; the limiting structure 21 and the positioning structure 22 are fixedly connected; the filtering structure 1 and the limiting structure 21 are detachably connected.

[0033] When in use, the filter structure 1 is installed inside the limiting structure 21 and the positioning structure 22, and then the filter structure 1 and the filter bracket 2 are placed inside the centrifuge tube 3, and the filter structure 1 is kept between the filter bracket 2 and the tube mouth of the centrifuge tube 3. The filter bracket 2 props up the filter structure 1 toward the tube mouth. During high-speed centrifugal operation, under the action of centrifugal force, the connection between the filter structure 1 and the filter bracket 2 is tighter, and there will be no gap between the filter structure 1 and the filter bracket 2, and the filter structure 1 will not be separated from the filter bracket 2, ensuring the orderly conduct of the centrifugal filtration operation.

[0034] In some embodiments of the present application, the filter support 2 further includes a support structure 23 ; the support structure 23 is located on a side of the positioning structure 22 away from the limiting structure 21 ; and the support structure 23 is fixedly connected to the positioning structure 22 .

[0035] The purpose of the support structure 23 is to:

[0036] 1. Prevent the filter support 2 and the centrifuge tube 3 from being offset, so as to prevent a gap from appearing between the filter structure 1 and the inner wall of the centrifuge tube 3 during high-speed centrifugation operation, thereby affecting the centrifugal filtration effect;

[0037] 2. There is a certain space between the positioning structure 22 and the inner bottom surface of the centrifuge tube 3 to store the filtered solution, prevent the filtering structure 1 from being immersed in the filtered solution, and ensure that the filtering structure 1 can perform its own function.

[0038] Example 2

[0039] like Figure 1-6 A filtering device is shown, which includes a filtering structure 1, a limiting structure 21 and a positioning structure 22; the limiting structure 21 and the positioning structure 22 are fixedly connected; the filtering structure 1 and the limiting structure 21 are detachably connected, and the limiting structure 21 presses the filtering structure 1 on the side wall of the positioning structure 22. A through hole 221 is provided inside the positioning structure 22, so that the solution filtered by the filtering structure 1 can pass through the positioning structure 22.

[0040] Specifically, at least two limiting structures 21 are provided at one end of the positioning structure 22; a plurality of limiting structures 21 are arranged in a circumferential array at one end of the positioning structure 22 to uniformly squeeze the filter structure 1 onto the side wall of the positioning structure 22. If the squeezing force applied by the limiting structures 21 to the filter structure 1 is uneven, a local gap will appear between the filter structure 1 and the positioning structure 22, affecting the centrifugal filtration effect.

[0041] Preferably, three or four limiting structures 21 are provided at one end of the positioning structure 22 .

[0042] In an adaptive embodiment of the present application, the limiting structure 21 includes a limiting arm 211 and a limiting buckle 212; one end of the limiting arm 211 is fixedly connected to the limiting buckle 212, and the other end is fixedly connected to the positioning structure 22. The limiting buckle 212 protrudes from the side wall of the limiting arm 211 to apply pressure to the filter structure 1.

[0043] When in use, the filtering structure 1 is located between the limiting buckle 212 and the positioning structure 22 , and the length of the limiting arm 211 is equal to the thickness of the filtering structure 1 .

[0044] In some examples of the present application, a support structure 23 is provided on a side of the positioning structure 22 away from the limiting structure 21 ; the support structure 23 is fixedly connected to the positioning structure 22 .

[0045] Specifically, the support structures 23 are arranged in a circumferential array on a side of the positioning structure 22 away from the limiting structure 21 .

[0046] Alternatively, the support structure 23 is a tubular structure, and the outer diameter of the support structure 23 is smaller than or equal to the outer diameter of the positioning structure 22 , so that the filtering device can enter the interior of the centrifuge tube 3 .

[0047] Example 3

[0048] like Figure 1-10 A centrifuge tube 3 with a filtering device is shown, which includes a centrifuge tube 3 and a filtering device; the filtering device is located inside the centrifuge tube 3; the filtering device includes a filtering structure 1 and a filtering bracket 2; the filtering bracket 2 includes a limiting structure 21 and a positioning structure 22; the limiting structure 21 and the positioning structure 22 are fixedly connected; the filtering structure 1 and the limiting structure 21 are detachably connected; the filtering structure 1 is located at one end of the filtering bracket 2 facing the opening of the centrifuge tube 3.

[0049] Specifically, the positioning structure 22 is a circular plate-shaped structure; the outer diameter of the positioning structure 22 is equal to the inner diameter of the centrifuge tube 3 , so that the filtering device can enter the interior of the centrifuge tube 3 .

[0050] In a specific example of the present application, a sealing cap 4 is provided at the opening of the centrifuge tube 3 ; the sealing cap 4 is detachably connected to the centrifuge tube 3 .

[0051] Example 4

[0052] like Figure 1-3 A 15 ml centrifuge tube 3 filter device is shown,

[0053] It comprises a filtering structure 1, a limiting structure 21, a positioning structure 22 and a supporting structure 23. One end of the positioning structure 22 is provided with two limiting structures 21, and the other end is provided with four supporting structures 23.

[0054] The limiting structure 21 fixes the filter structure 1 on the positioning structure 22. The limiting structure 21 is arranged in a circumferential array on the side wall of the positioning structure 22. The limiting structure 21 limits the position of the filter structure 1 on both sides of the filter structure 1 to prevent the filter structure 1 from being deviated during the filtering process, thereby affecting the filtering effect.

[0055] The support structures 23 are arranged in a circumferential array on the side wall of the positioning structure 22. The support structures 23 evenly support the positioning structure 22 and the filter structure 1 mounted on the positioning structure 22 at multiple points to prevent the filter structure 1 from deviating during the filtering process.

[0056] A through hole 221 is provided inside the positioning structure 22 . When the filtering structure 1 is installed inside the positioning structure 22 , the filtering structure 1 completely blocks the through hole 221 , so that the solution passes through the filtering device through the filtering structure 1 and the through hole 221 in sequence.

[0057] Example 5

[0058] like Figure 1-3 , a 15 ml centrifuge tube 3 with a filtering device as shown in 7-8.

[0059] It comprises a filtering device for a 15ml centrifuge tube 3 and a 15ml centrifuge tube 3 .

[0060] The 15 ml centrifuge tube 3 is installed inside the 15 ml centrifuge tube 3 with the filtering device, and the filtering structure 1 is kept facing the opening of the 15 ml centrifuge tube 3 .

[0061] Example 6

[0062] like Figure 4-6 A 50 ml centrifuge tube 3 filter device is shown,

[0063] It includes a filtering structure 1, a limiting structure 21, a positioning structure 22 and a supporting structure 23. A through hole 221 is provided inside the positioning structure 22. Three limiting structures 21 are provided at one end of the positioning structure 22, and four supporting structures 23 are provided at the other end. When the filtering structure 1 is installed inside the positioning structure 22, the filtering structure 1 completely blocks the through hole 221, so that the solution passes through the filtering device through the filtering structure 1 and the through hole 221 in sequence.

[0064] The limiting structures 21 are arranged in a circumferential array on the side wall of the positioning structure 22. The limiting structures 21 are arranged around the filtration structure 1 in a three-point fixed manner to limit the position of the filtration structure 1, preventing the filtration structure 1 from being displaced during the filtration process and affecting the filtration effect. The supporting structures 23 are arranged in a circumferential array on the side wall of the positioning structure 22. The supporting structures 23 evenly support the positioning structure 22 and the filtration structure 1 installed on the positioning structure 22 at multiple points, preventing the filtration structure 1 from being displaced during the filtration process.

[0065] Example 7

[0066] like Figure 4-6 , a 50 ml centrifuge tube 3 with a filtering device as shown in 9-10.

[0067] It comprises a filtering device for a 50ml centrifuge tube 3 and a 50ml centrifuge tube 3 .

[0068] The 50 ml centrifuge tube 3 is installed inside the 50 ml centrifuge tube 3 with the filtering device, and the filtering structure 1 is kept facing the opening of the 50 ml centrifuge tube 3 .

[0069] A sealing cap 4 is provided at the tube mouth of the 50 ml centrifuge tube 3 , and the sealing cap 4 is detachably connected to the 50 ml centrifuge tube 3 .

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", "some examples", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] The embodiments described in this application are only part of the embodiments of the utility model, not all of the embodiments. Those skilled in the art can easily understand other advantages and effects of the utility model from the contents disclosed in this specification. The utility model can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A filtering device, comprising a filtering structure and a filtering support; characterized in that: The filtering structure is a circular plate-shaped structure; the filtering support comprises a limiting structure and a positioning structure; the limiting structure and the positioning structure are fixedly connected; the filtering structure and the limiting structure are detachably connected.

2. A filtering device according to claim 1, characterized in that: At least two limiting structures are arranged at one end of the positioning structure; the limiting structures are arranged in a circumferential array at one end of the positioning structure.

3. A filtering device according to claim 1, characterized in that: The limiting structure comprises a limiting arm and a limiting buckle; one end of the limiting arm is fixedly connected to the limiting buckle, and the other end is fixedly connected to the positioning structure.

4. A filtering device according to claim 3, characterized in that: The length of the limiting arm is equal to the thickness of the filtering structure.

5. A filtering device according to claim 1, characterized in that: The filter support further comprises a supporting structure; the supporting structure is located on a side of the positioning structure away from the limiting structure; and the supporting structure is fixedly connected to the positioning structure.

6. A filtering device according to claim 5, characterized in that: The support structures are arranged in a circumferential array on one side of the positioning structure away from the limiting structure.

7. A filtering device according to claim 1, characterized in that: A through hole is arranged inside the positioning structure.

8. A centrifuge tube with a filtering device, characterized in that: It includes: Centrifuge tubes; The filtration device according to any one of claims 1 to 7, wherein the filtration device is located inside a centrifuge tube; The filtering structure is detachably connected to the limiting structure; the filtering structure is located at one end of the filtering bracket facing the opening of the centrifuge tube.

9. A centrifuge tube with a filtering device according to claim 8, characterized in that: The positioning structure is a circular plate-shaped structure; the outer diameter of the positioning structure is equal to the inner diameter of the centrifuge tube.

10. A centrifuge tube with a filtering device according to claim 8, characterized in that: A sealing cap is provided at the opening of the centrifuge tube; the sealing cap is detachably connected to the centrifuge tube.

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