High-precision filtering centrifuge tube

Abstract

The utility model discloses a high precision filtration centrifuge tube relates to centrifuge tube field, including centrifuge tube main part and the filter tube that is embedded in the centrifuge tube main part, the inner wall of centrifuge tube main part is provided with the location hole of hemispherical structure, and the top end of centrifuge tube main part is equipped with the fastening subassembly that is used for sealing the filter tube, a mounting part is arranged at the top end of the filter tube, positioning parts inserted into the positioning holes in a matched mode are fixed to the outer wall of the mounting part in an annular array mode, the fastening assembly comprises a rotary knob and a screw rod fixed to the bottom end of the rotary knob, and the screw rod is inserted into the centrifugal tube body in a threaded mode. According to the centrifugal tube, the positioning part and the positioning hole are mutually clamped, so that the condition that the filter tube slides is avoided, the filter tube and the centrifugal tube main body synchronously rotate, the stability of the filter tube after installation is improved, the filter tube can be conveniently pulled out of the centrifugal tube main body through the pulling plate, and the convenience of installation and disassembly of the filter tube is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal tube field, concretely is a centrifugal tube of high-precision filtration. BACKGROUND

[0002] The ultrafiltration centrifugal tube has the function of rapid ultrafiltration, can reach a higher concentration coefficient, is easy to recover concentrated liquid from dilute liquid and complex sample combination, and is widely used in the field of biological filtration. The ultrafiltration centrifugal tube is mainly applied to concentration of biological samples containing antigens, antibodies, enzymes, nucleic acids (single or double DNA / RNA samples), microorganisms, eluate and purified samples.

[0003] At present, most of the ultrafiltration centrifugal tubes on the market are not fixed with the filter tube, the filter tube exists the problem of sliding friction between the inner wall of the centrifugal tube during rotation, and the bottom of the centrifugal tube is provided with a liquid storage cavity, the unfixed filter tube will slide downward into the liquid storage cavity, resulting in the increase of the gap between the top of the centrifugal tube and the filter tube and the leakage of liquid. UTILITY MODEL CONTENT

[0004] Therefore, the utility model discloses a centrifugal tube of high-precision filtration to solve the technical problem that the filter tube does not rotate and exists sliding friction between the inner wall of the centrifugal tube during rotation, and the bottom of the centrifugal tube is provided with a liquid storage cavity, the unfixed filter tube will slide downward into the liquid storage cavity, resulting in the increase of the gap between the top of the centrifugal tube and the filter tube and the leakage of liquid.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a centrifugal tube of high-precision filtration, which comprises a centrifugal tube main body and a filter tube embedded in the centrifugal tube main body, a positioning hole in a hemispherical structure is formed in the inner wall of the centrifugal tube main body, a fastening assembly for sealing the filter tube is installed at the top end of the centrifugal tube main body, an installation part is arranged at the top end of the filter tube, and a positioning part inserted into the positioning hole in an anastomosis mode is fixed in an annular array on the outer wall of the installation part.

[0006] The utility model is further provided as follows: the fastening assembly comprises a knob and a screw rod fixed at the bottom end of the knob, and the screw rod is threadedly inserted into the centrifugal tube main body.

[0007] The utility model is further provided as follows: a protruding part is arranged at the top end of the centrifugal tube main body, and a rubber pad closely connected with the protruding part is embedded and fixed at the bottom end of the knob.

[0008] The utility model is further provided as follows: a hollow sealing block is fixed at the bottom end of the screw rod, and the bottom end of the sealing block in an arc-shaped structure is closely connected with the inner wall of the installation part.

[0009] The utility model further sets up, the bottom of installation department is fixed with a plurality of rigid positioning strip in annular array, and the inner wall both sides of installation department all are fixed with pull plate.

[0010] The utility model further sets up, the bottom of a plurality of rigid positioning strip is fixedly connected, and the adjacent two rigid positioning strip between inlay fixed have filter core.

[0011] The utility model further sets up, the bottom of filter tube and centrifugal tube between setting up liquid storage warehouse, and the outer wall of filter tube and the inner wall of centrifugal tube between setting up with liquid storage warehouse link's liquid flow channel.

[0012] Summarized above, the utility model mainly has following beneficial effect: the utility model discloses inlay setting filter tube in centrifugal tube main part, and the positioning part of filter tube top end installation department outer wall inlay setting is in the positioning hole, and the positioning part and positioning hole are mutually clamped, avoid the situation that filter tube appears sliding, and make filter tube and centrifugal tube main part synchronous rotation, improve the stability of filter tube after installation, and the pull plate of installation department inner wall is convenient for pulling out filter tube from centrifugal tube main part, improve the convenience of filter tube installation and dismounting;

[0013] Through the knob of screw thread insertion in the top of centrifugal tube main part, and the rubber pad of knob bottom is closely connected with the convex part, and the top of centrifugal tube main part keeps sealed, and the sealing block is closely inserted in the installation department of filter tube top after the fixation of knob, thereby avoid the situation that the liquid in filter tube appears leakage. DRAWINGS

[0014] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0015] Figure 2 It is the split structure schematic diagram of centrifugal tube main part of the utility model;

[0016] Figure 3 It is the utility model Figure 2 It is the structure enlarged schematic diagram of A place in the utility model;

[0017] Figure 4 It is the section structure schematic diagram of centrifugal tube main part of the utility model.

[0018] In the drawing: 1, centrifugal tube main part;2, convex part;3, screw rod;4, knob;5, sealing block;6, positioning hole;7, filter tube;8, rigid positioning strip;9, filter core;10, pull plate;11, installation department;12, positioning part;13, liquid storage warehouse;14, rubber pad. DETAILED DESCRIPTION

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] A high-precision filtration centrifuge tube, such as Figures 1-4 As shown, the centrifuge tube body 1 includes a filter tube 7 embedded in the centrifuge tube body 1. The inner wall of the centrifuge tube body 1 has a positioning hole 6 with a hemispherical structure, and the top of the centrifuge tube body 1 is equipped with a fastening component for sealing the filter tube 7. The top of the filter tube 7 is provided with a mounting part 11, and the outer wall of the mounting part 11 is fixed with positioning parts 12 that fit into the positioning hole 6 in a ring array.

[0021] The bottom of the mounting part 11 is fixed with multiple rigid positioning strips 8 in a ring array, and pull plates 10 are fixed on both sides of the inner wall of the mounting part 11. The bottom ends of the multiple rigid positioning strips 8 are fixedly connected to each other, and filter elements 9 are embedded between two adjacent rigid positioning strips 8. A liquid storage tank 13 is provided between the bottom of the filter tube 7 and the centrifuge tube, and a liquid flow channel connected to the liquid storage tank 13 is provided between the outer wall of the filter tube 7 and the inner wall of the centrifuge tube. The positioning part 12 on the outer wall of the mounting part 11 at the top of the filter tube 7 is embedded in the positioning hole 6. The positioning part 12 and the positioning hole 6 are engaged with each other to prevent the filter tube 7 from sliding and to make the filter tube 7 rotate synchronously with the centrifuge tube body 1, thereby improving the stability of the filter tube 7 after installation. The pull plates 10 on the inner wall of the mounting part 11 make it easy to pull the filter tube 7 out of the centrifuge tube body 1.

[0022] Furthermore, the fastening assembly includes a knob 4 and a screw 3 fixed to the bottom of the knob 4. The screw 3 is threaded into the centrifuge tube body 1. The top of the centrifuge tube body 1 is provided with a protrusion 2. The bottom of the knob 4 is embedded with a rubber pad 14 that is tightly connected to the protrusion 2. The bottom of the screw 3 is fixed with a hollow sealing block 5. The bottom of the sealing block 5, which has an arc-shaped structure, is tightly connected to the inner wall of the mounting part 11. The rubber pad 14 at the bottom of the knob 4 is tightly connected to the protrusion 2 to keep the top of the centrifuge tube body 1 sealed. At the same time, after the knob 4 is fixed, the sealing block 5 is tightly inserted into the mounting part 11 at the top of the filter tube 7, thereby preventing the liquid added to the filter tube 7 from leaking.

[0023] The utility model discloses a working principle: when using filter pipe 7 is inserted into centrifugal tube main part 1, and the positioning portion 12 of filter pipe top end installation part 11 outer wall is inlayed in the positioning hole 6, and the positioning portion 12 and positioning hole 6 are mutually clamped, avoid the filter pipe 7 to appear the condition of sliding, and make filter pipe 7 and centrifugal tube main part 1 synchronous rotation, improve the stability of filter pipe 7 after installation, and after installation, knob 4 is installed at the top of centrifugal tube main part 1, and screw rod 3 is screwed in and is connected in centrifugal tube main part 1, and the rubber pad 14 of knob 4 bottom is tightly connected with the convex part 2, and the top of centrifugal tube main part 1 is kept sealed, and knob 4 is sealed after fixing block 5 tightly inserts in the installation part 11 of filter pipe 7 top, and after centrifugation, knob 4 is screwed down, and make the pull plate 10 of installation part 11 inner wall pull out filter pipe 7 from centrifugal tube main part 1, improve the convenience of filter pipe 7 installation and disassembly.

[0024] Although the embodiments of the utility model have been shown and described, the specific embodiments are only the explanation of the utility model, and are not the limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, and the person skilled in the art can make the modification, replacement and change of the embodiment without the creative contribution after reading the specification without departing from the principles and the purpose of the utility model, but as long as in the claim range of the utility model, it is protected by the patent law.

Claims

1. A high-precision filtered centrifuge tube, comprising a centrifuge tube body (1) and a filter tube (7) embedded in the centrifuge tube body (1), characterized in that: The inner wall of the centrifugal tube body (1) is provided with a positioning hole (6) in a hemispherical structure, and the top end of the centrifugal tube body (1) is provided with a fastening assembly for sealing a filter tube (7), the top end of the filter tube (7) is provided with a mounting portion (11), and the outer wall of the mounting portion (11) is fixed with a positioning portion (12) in a ring array, which is inserted into the positioning hole (6).

2. The high precision filtered centrifuge tube of claim 1, wherein: The fastening assembly comprises a knob (4) and a screw rod (3) fixed at the bottom end of the knob (4), and the screw rod (3) is screwed into the centrifugal tube body (1).

3. The high precision filtered centrifuge tube of claim 2, wherein: The top end of the centrifugal tube body (1) is provided with a protruding portion (2), and the bottom end of the knob (4) is embeddedly fixed with a rubber pad (14) closely connected with the protruding portion (2).

4. The high precision filtered centrifuge tube of claim 2, wherein: The bottom end of the screw rod (3) is fixed with a hollow sealing block (5), and the bottom end of the sealing block (5) in an arc structure is closely connected with the inner wall of the mounting portion (11).

5. The high precision filtered centrifuge tube of claim 4, wherein: The bottom end of the mounting portion (11) is fixed with a plurality of rigid positioning strips (8) in a ring array, and the inner wall of the mounting portion (11) is fixed with a pull plate (10) on both sides.

6. The high precision filtered centrifuge tube of claim 5, wherein: The bottom ends of the plurality of rigid positioning strips (8) are fixedly connected with each other, and a filter element (9) is embeddedly fixed between two adjacent rigid positioning strips (8).

7. The high precision filtered centrifuge tube of claim 1, wherein: The bottom of the filter tube (7) and the centrifugal tube are provided with a liquid storage bin (13), and the outer wall of the filter tube (7) and the inner wall of the centrifugal tube are provided with a liquid flow channel communicated with the liquid storage bin (13).

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