Universal bacteria filter cartridge

Abstract

The utility model discloses a universal bacteria filter cartridge, which comprises a base, a middle frame, an upper cover and a filter membrane, the upper cover is sleeved at the upper end of the middle frame, the lower end of the middle frame is inserted in the base, and the filter membrane is fixedly arranged in the base, the universal bacteria filter cartridge is characterized in that a first notch is arranged at the upper end of the base, and a second notch is arranged at the lower end of the middle frame. A first notch is formed in the upper end of the base, a second notch is formed in the lower end of the base, the filter membranes comprise a first filter membrane fixed in the first notch and a second filter membrane fixed in the second notch, first cotton paper is arranged on the lower portion of the first filter membrane, and second cotton paper is arranged on the upper portion of the second filter membrane; and the aperture of the filter holes of the first filter membrane is different from that of the filter holes of the second filter membrane. According to the utility model, the filter membranes with different apertures are arranged, so that the universality can be greatly improved.

Description

Technical Field

[0001] This utility model relates to a bacterial filter box, and more particularly to a universal bacterial filter box. Background Technology

[0002] Chinese Patent Publication No. CN205556658U discloses a novel bacterial filter box, comprising a base, a filter membrane, a middle frame, and a top cover arranged sequentially from bottom to top. The filter membrane is fixed to the base, and the bottom of the base has a through-hole for vacuum trapping bacteria. A layer of cotton paper is placed below the filter membrane. The base of this invention can be used as a culture dish after bacterial filtration, and the cotton paper below the filter membrane can also serve as a water-based growth bed for bacterial culture. This design simplifies the detection process and greatly improves efficiency; this device can increase work efficiency by more than ten times.

[0003] However, the aforementioned bacterial filter cartridges have poor versatility and sealing, failing to meet the requirements for multi-strain culture, thus necessitating a solution. Utility Model Content

[0004] The purpose of this invention is to provide a universal bacterial filter cartridge to address the problems mentioned in the background section.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A universal bacterial filter cartridge includes a base, a middle frame, a top cover, and a filter membrane. The top cover is fitted onto the upper end of the middle frame, and the lower end of the middle frame is inserted into the base. The filter membrane is fixedly installed in the base. The upper end of the base is provided with a first slot, and the lower end of the base is provided with a second slot. The filter membrane includes a first filter membrane fixed in the first slot and a second filter membrane fixed in the second slot. A first cotton paper is provided at the lower part of the first filter membrane, and a second cotton paper is provided at the upper part of the second filter membrane. The pore size of the first filter membrane is different from that of the second filter membrane.

[0007] As a preferred embodiment of this utility model, a first vacuum hole is provided on the upper side wall of the base, and a second vacuum hole is provided on the lower side wall of the base.

[0008] As a preferred embodiment of the present invention, a first sealing strip is provided at the upper end port of the middle frame, and a second sealing strip is provided at the lower end port of the middle frame.

[0009] As a preferred embodiment of the present invention, a first guide section is provided at the upper end of the middle frame, and the outer diameter of the first guide section increases from top to bottom.

[0010] As a preferred embodiment of this utility model, the outer diameter of the middle frame decreases sequentially from top to bottom.

[0011] As a preferred embodiment of this utility model, the diameter of the first slot increases from top to bottom, and the diameter of the second slot decreases from top to bottom.

[0012] In a preferred embodiment of this utility model, the pore size of the first filter membrane is 0.45 μm, and the pore size of the second filter membrane is 0.22 μm.

[0013] As a preferred embodiment of this utility model, an outer ring is provided on the outer wall in the middle of the base for easy handling.

[0014] The beneficial effects of this utility model are as follows: Compared with the prior art, the bacterial filter box of this utility model is equipped with filter membranes of different pore sizes, which can greatly improve its versatility. Secondly, by setting the first sealing strip and the second sealing strip on the middle frame, the sealing performance can be greatly improved, which can greatly improve the efficiency of vacuuming. In addition, the design of the first guide section on the middle frame and the design of the middle frame itself make the disassembly and assembly between the middle frame and the top cover, and between the middle frame and the base convenient and simple, and easy to operate. This allows the base to be used as a culture dish independently without the need for filter membrane transfer. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a universal bacterial filter box according to the present invention.

[0016] In the picture:

[0017] 1. Base; 2. Middle frame; 3. Top cover; 4. First filter membrane; 5. Second filter membrane; 6. First slot; 7. Second slot; 8. Outer ring. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, a mechanical connection, an electrical connection, or an indirect connection through an intermediate medium. They can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] In the description of this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] Please refer to Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of a universal bacterial filter box according to the present invention.

[0022] In this embodiment, a universal bacterial filter box includes a base 1, a middle frame 2, a top cover 3, and a filter membrane. The top cover 3 is sleeved on the upper end of the middle frame 2, and the lower end of the middle frame 2 is inserted into the base 1. The filter membrane is fixedly installed in the base 1. The upper end of the base 1 is provided with a first slot 6, and the lower end of the base 1 is provided with a second slot 7. The filter membrane includes a first filter membrane 4 fixed in the first slot 6 and a second filter membrane 5 fixed in the second slot 7. The lower part of the first filter membrane 4 is provided with a first cotton paper, and the upper part of the second filter membrane 5 is provided with a second cotton paper. The pore size of the first filter membrane 4 is different from the pore size of the second filter membrane 5.

[0023] Specifically, in this embodiment, a first vacuum hole is opened on the upper side wall of the base 1, and a second vacuum hole is opened on the lower side wall of the base 1.

[0024] Specifically, in this embodiment, a first sealing strip is provided at the upper end of the middle frame 2, and a second sealing strip is provided at the lower end of the middle frame 2.

[0025] Specifically, in this embodiment, a first guide segment is provided at the upper end of the middle frame 2, and the outer diameter of the first guide segment increases sequentially from top to bottom.

[0026] Specifically, in this embodiment, the outer diameter of the middle frame 2 decreases sequentially from top to bottom.

[0027] Specifically, in this embodiment, the diameter of the first slot 6 increases from top to bottom, and the diameter of the second slot 7 decreases from top to bottom.

[0028] Specifically, in this embodiment, the pore size of the first filter membrane 4 is 0.45 μm, and the pore size of the second filter membrane 5 is 0.22 μm.

[0029] Specifically, in this embodiment, an outer ring 8 is provided on the outer wall of the middle part of the base 1 to facilitate picking up and putting down.

[0030] It is worth mentioning that, although in this embodiment the pore size of the first filter membrane 4 is 0.45um and the pore size of the second filter membrane 5 is 0.22um, the present invention is not limited thereto. The pore sizes of the first filter membrane 4 and the second filter membrane 5 can be customized according to customer needs, that is, different bacteria can be filtered.

[0031] The aforementioned bacterial filter box can greatly improve its versatility by setting filter membranes with different pore sizes. Secondly, by setting the first sealing strip and the second sealing strip on the middle frame 2, the sealing performance can be greatly improved, which in turn greatly improves the efficiency during vacuuming. In addition, the design of the first guide section on the middle frame 2 and the design of the structure of the middle frame 2 itself make the disassembly and assembly between the middle frame 2 and the top cover 3, and between the middle frame 2 and the base 1 convenient and simple, and easy to operate. This allows the base 1 to be used as a culture dish independently without the need for filter membrane transfer.

[0032] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims.

Claims

1. A universal bacterial filter cartridge, comprising a base, a middle frame, a top cover, and a filter membrane, wherein the top cover is sleeved on the upper end of the middle frame, the lower end of the middle frame is inserted into the base, and the filter membrane is fixedly installed in the base, characterized in that: The upper end of the base is provided with a first groove, and the lower end of the base is provided with a second groove. The filter membrane includes a first filter membrane fixed in the first groove and a second filter membrane fixed in the second groove. A first cotton paper is provided at the lower part of the first filter membrane, and a second cotton paper is provided at the upper part of the second filter membrane. The pore size of the first filter membrane is different from that of the second filter membrane.

2. The universal bacterial filter cartridge according to claim 1, characterized in that: A first vacuum hole is provided on the upper side wall of the base, and a second vacuum hole is provided on the lower side wall of the base.

3. A universal bacterial filter cartridge according to claim 2, characterized in that: A first sealing strip is provided at the upper end of the middle frame, and a second sealing strip is provided at the lower end of the middle frame.

4. A universal bacterial filter cartridge according to claim 1, characterized in that: A first guide section is provided at the upper end of the middle frame, and the outer diameter of the first guide section increases from top to bottom.

5. A universal bacterial filter cartridge according to claim 4, characterized in that: The outer diameter of the middle frame decreases from top to bottom.

6. A universal bacterial filter cartridge according to claim 1, characterized in that: The diameter of the first slot increases from top to bottom, and the diameter of the second slot decreases from top to bottom.

7. A universal bacterial filter cartridge according to claim 1, characterized in that: The first filter membrane has a pore size of 0.45 μm, and the second filter membrane has a pore size of 0.22 μm.

8. A universal bacterial filter cartridge according to claim 1, characterized in that: The outer wall in the middle of the base is provided with an outer ring for easy handling.

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