Primary filtering device

Abstract

The primary filtering device comprises a funnel seat, an extension seat sleeve, upper filter paper, lower filter paper, an upper pressing seat, a lower pressing seat and a container, an outlet is formed in the bottom of the funnel seat; the lower filter paper is placed above the funnel seat and is pressed by the lower pressing seat; the outer side of the extension seat sleeve is connected with a shelving outer ring, and the extension seat sleeve is inserted into the lower pressing seat and is shelved on the lower pressing seat through the shelving outer ring; the upper filter paper is placed above the extension seat sleeve and is pressed by the upper pressing seat; and the container is placed right below the outlet. According to the primary filtering device disclosed by the utility model, the lower filter paper and the upper filter paper are fixed, the lower filter paper is placed above the funnel seat and is pressed by the lower pressing seat, and the upper filter paper is placed above the extension seat sleeve and is pressed by the upper pressing seat. The device is convenient and easy to use.

Description

Technical Field

[0001] The utility model relates to a filtering device, in particular to a primary filtering device. Background Art

[0002] Serum refers to the yellowish transparent liquid separated from the plasma after blood coagulation by removing fibrinogen and certain coagulation factors, or refers to the plasma from which fibrinogen has been removed; its main function is to provide basic nutrients, hormones and various growth factors, binding proteins, contact-promoting and growth factors to prevent cell adhesion from mechanical damage, and to play a certain protective role for cells in culture.

[0003] In the existing serum production process, we generally first perform primary filtration on it, and then sterilize and filter it after the primary filtration is completed. Many existing laboratories use simple filter paper filtration for primary filtration of serum. Specifically, the serum is filtered by handheld filter paper. This method is simple to operate, but it is easy to shake your hands during the filtration process, and it is more tiring if a long time of filtration is required. Therefore, a primary filtration device that can fix the filter paper is what we need, which is convenient for us to perform primary filtration of the serum. Utility Model Content

[0004] The utility model aims to solve the technical problem of providing a primary filtering device which can fix filter paper.

[0005] In order to solve the above technical problems, the technical solution of a primary filtration device of the utility model is:

[0006] It includes a funnel seat, an extension seat cover, an upper filter paper, a lower filter paper, an upper pressing seat, a lower pressing seat and a container; an outlet is provided at the bottom of the funnel seat; the lower filter paper is placed above the funnel seat and pressed by the lower pressing seat; a rest outer ring is connected to the outer side of the extension seat cover, the extension seat cover is inserted into the lower pressing seat and rests on the lower pressing seat through the rest outer ring; the upper filter paper is placed above the extension seat cover and pressed by the upper pressing seat; the container is placed directly below the outlet.

[0007] A first step outer ring is provided on the outer side of the upper end of the funnel seat; a plurality of first through-holes are provided on the outer side of the first step outer ring, which are rotated around the axis of the first step outer ring; the outer periphery of the lower clamping seat is connected with a first vertical screw corresponding to the first through-hole; the lower end of the first vertical screw passes through the first through-hole corresponding to itself and is threadedly connected to the first nut; a second step outer ring is provided on the outer side of the upper end of the extension seat sleeve; a plurality of second through-holes are provided on the outer side of the second step outer ring, which are rotated around the axis of the second step outer ring; the outer periphery of the upper clamping seat is connected with a second vertical screw corresponding to the second through-hole; the lower end of the second vertical screw passes through the second through-hole corresponding to itself and is threadedly connected to the second nut.

[0008] A first pressing ring is provided on the lower end surface of the lower pressing seat; the lower filter paper is pressed between the first pressing ring and the funnel seat; a second pressing ring is provided on the lower end surface of the upper pressing seat; the upper filter paper is pressed between the second pressing ring and the extension seat sleeve.

[0009] The outer side of the first step outer ring is provided with eight first through-holes which are evenly distributed and rotated around the axis of the first step outer ring, and the corresponding outer periphery of the lower clamping seat is connected with eight first vertical screws; the outer side of the second step outer ring is provided with eight second through-holes which are evenly distributed and rotated around the axis of the second step outer ring; the outer periphery of the upper clamping seat is connected with eight second vertical screws.

[0010] A base is also placed under the container; a limiting ring corresponding to the base is connected to the base; the container is placed in the limiting ring; four positioning holes that are evenly distributed and rotate around the axis of the base are also opened on the outer periphery of the base; four insertion rods corresponding to the four positioning holes are connected under the funnel seat; the lower ends of the insertion rods are inserted into the positioning holes corresponding to themselves.

[0011] The technical effect that can be achieved by the utility model is as follows: in the primary filtering device of the utility model, the lower filter paper is placed above the funnel seat and is pressed by the lower pressing seat, and the upper filter paper is placed above the extension seat sleeve and is pressed by the upper pressing seat. The lower filter paper and the upper filter paper of the utility model are fixed in the above-mentioned manner and do not need to be held by hand, which is more convenient and easy; and in the primary filtration process of serum, the serum is filtered by the upper filter paper and the lower filter paper in turn and then enters the funnel seat, and finally flows out from the outlet at the bottom of the funnel seat, thereby being collected in the container. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0013] Figure 1 This is a three-dimensional diagram of a primary filtering device of the present utility model;

[0014] Figure 2 yes Figure 1 A magnified view of part A;

[0015] Figure 3 This is a structural diagram of a primary filtering device of the utility model;

[0016] Figure 4 This is an exploded view of a primary filtration device of the utility model;

[0017] Figure 5 yes Figure 4 Enlarged view of part B. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] See Figures 1 to 5 .

[0020] A primary filtering device comprises a funnel seat 1, an extension seat sleeve 2, an upper filter paper 3, a lower filter paper 4, an upper pressing seat 5, a lower pressing seat 6 and a container 7; an outlet 8 is provided at the bottom of the funnel seat 1; the lower filter paper 4 is placed above the funnel seat 1 and pressed by the lower pressing seat 6. Specifically, a first step outer ring 11 is provided on the outer side of the upper end of the funnel seat 1, and a plurality of first through-holes 12 are provided on the outer side of the first step outer ring 11 to rotate around the axis of the first step outer ring 11. The outer periphery of the lower pressing seat 6 is connected to a first vertical screw 13 corresponding to the first through-hole 12, and the lower end of the first vertical screw 13 passes through the corresponding The first through-hole 12 is threadedly connected to the first nut 14, and the lower end surface of the lower pressing seat 6 is provided with a first pressing ring 15, and the lower filter paper 4 is pressed between the first pressing ring 15 and the funnel seat 1; more specifically, the outer side of the first step outer ring 11 is provided with eight first through-holes 12 that are evenly distributed and rotated around the axis of the first step outer ring 11, and the corresponding outer periphery of the lower pressing seat 6 is connected with eight first vertical screws 13; in the utility model, by rotating the first nut 14, the lower pressing seat 6 is moved downward, so that the lower filter paper 4 is pressed between the first pressing ring 15 and the funnel seat 1 (reference Figure 1 、 2 ).

[0021] The outer side of the extension seat cover 2 is connected to a rest outer ring 9, the extension seat cover 2 is inserted into the lower pressing seat 6 and is placed on the lower pressing seat 6 through the rest outer ring 9; the upper filter paper 3 is placed above the extension seat cover 2 and is pressed by the upper pressing seat 5. Specifically, a second step outer ring 21 is provided on the outer side of the upper end of the extension seat cover 2, and a plurality of second through-holes 22 are provided on the outer side of the second step outer ring 21 with a plurality of second through-holes 22 being rotated and distributed with the axis of the second step outer ring 21 as the axis. The outer periphery of the upper pressing seat 5 is connected to a second vertical screw 23 corresponding to the second through-hole 22, and the lower end of the second vertical screw 23 passes through the second through-hole corresponding to itself 22 is threadedly connected to the second nut 24, and a second clamping ring 25 is provided on the lower end surface of the upper clamping seat 5, and the upper filter paper 3 is clamped between the second clamping ring 25 and the extended seat sleeve 2; more specifically, eight second through-holes 22 are provided on the outside of the second step outer ring 21 and are evenly distributed and rotated around the axis of the second step outer ring 21, and eight second vertical screws 23 are connected to the outer periphery of the upper clamping seat 5; in the utility model, by rotating the second nut 24, the upper clamping seat 5 is moved downward, so that the upper filter paper 3 is clamped between the second clamping ring 25 and the extended seat sleeve 2.

[0022] The container 7 is placed directly below the outlet 8. Specifically, a base 31 is placed below the container 7. A limiting ring 32 corresponding to the base 31 is connected to the base 31. The container 7 is placed in the limiting ring 32. Four positioning holes 34 that are evenly distributed and rotate around the axis of the base 31 are also provided on the outer periphery of the base 31. Four insertion rods 33 corresponding to the four positioning holes 34 are connected below the funnel seat 1; the lower ends of the insertion rods 33 are inserted into the positioning holes 34 corresponding to themselves; the utility model is provided with a base 31, and the container 7 and the funnel seat 1 are positioned by providing a limiting ring 32 and a positioning hole 34 on the base 31.

[0023] The utility model is used (reference Figure 1 ), first, according to the filtering requirements, the extension seat sleeve 2 can be inserted or not. For example, when the serum filtration requirement only requires one filtration, the extension seat sleeve 2 can be installed without installing the extension seat sleeve 2, and the serum can be directly filtered through the lower filter paper 4. After being filtered by the lower filter paper 4, the serum enters the funnel seat 1, and finally flows into the container 7 from the outlet 8 below the funnel seat 1 for collection; when the serum needs to be filtered twice, the extension seat sleeve 2 can be inserted into the lower pressing seat 6. At this time, the serum can be filtered through the upper filter paper 3 and the lower filter paper 4. The serum is filtered through the upper filter paper 3 and the lower filter paper 4 in succession and then enters the funnel seat 1, and finally flows into the container 7 from the outlet 8 below the funnel seat 1 for collection.

Claims

1. A primary filtration device, characterized in that: The invention comprises a funnel seat (1), an extension seat sleeve (2), an upper filter paper (3), a lower filter paper (4), an upper pressing seat (5), a lower pressing seat (6) and a container (7); an outlet (8) is provided at the bottom of the funnel seat (1); the lower filter paper (4) is placed above the funnel seat (1) and is pressed by the lower pressing seat (6); a rest outer ring (9) is connected to the outer side of the extension seat sleeve (2); the extension seat sleeve (2) is inserted into the lower pressing seat (6) and rests on the lower pressing seat (6) through the rest outer ring (9); the upper filter paper (3) is placed above the extension seat sleeve (2) and is pressed by the upper pressing seat (5); and the container (7) is placed directly below the outlet (8).

2. A primary filtration device according to claim 1, characterized in that: The outer side of the upper end of the funnel seat (1) is provided with a first step outer ring (11); the outer side of the first step outer ring (11) is provided with a plurality of first through holes (12) which are distributed in rotation with the axis of the first step outer ring (11) as the axis; the outer periphery of the lower pressing seat (6) is connected with a first vertical screw (13) corresponding to the first through hole (12); the lower end of the first vertical screw (13) passes through the first through hole (12) corresponding to itself and is threadedly connected to the first nut (14); the outer side of the upper end of the extension seat sleeve (2) is provided with a second step outer ring (21); the outer side of the second step outer ring (21) is provided with a plurality of second through holes (22) which are distributed in rotation with the axis of the second step outer ring (21) as the axis; the outer periphery of the upper pressing seat (5) is connected with a second vertical screw (23) corresponding to the second through hole (22); the lower end of the second vertical screw (23) passes through the second through hole (22) corresponding to itself and is threadedly connected to the second nut (24).

3. A primary filtration device according to claim 2, characterized in that: The lower end surface of the lower pressing seat (6) is provided with a first pressing ring (15); the lower filter paper (4) is pressed between the first pressing ring (15) and the funnel seat (1); the lower end surface of the upper pressing seat (5) is provided with a second pressing ring (25); the upper filter paper (3) is pressed between the second pressing ring (25) and the extension seat sleeve (2).

4. A primary filtration device according to claim 2, characterized in that: The outer side of the first step outer ring (11) is provided with eight first through holes (12) which are evenly distributed and rotate around the axis of the first step outer ring (11), and the outer periphery of the corresponding lower pressing seat (6) is connected with eight first vertical screws (13); the outer side of the second step outer ring (21) is provided with eight second through holes (22) which are evenly distributed and rotate around the axis of the second step outer ring (21); the outer periphery of the upper pressing seat (5) is connected with eight second vertical screws (23).

5. A primary filtration device according to claim 1, characterized in that: A base (31) is placed below the container (7); a limiting ring (32) corresponding to the base (31) is connected to the base (31); the container (7) is placed in the limiting ring (32); four positioning sockets (34) are evenly distributed and rotated around the axis of the base (31) on the outer periphery of the base (31); four insertion rods (33) corresponding to the four positioning sockets (34) are connected below the funnel seat (1); the lower ends of the insertion rods (33) are inserted into the positioning sockets (34) corresponding to themselves.

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