Equal-lattice filter cartridge for detecting strain culture

Abstract

The utility model discloses an equal-grid filter box for detecting strain culture, which comprises a base, a cup body and a cover part, the cup body is in the shape of a cylindrical tube, the upper end and the lower end of the cup body are communicated, the lower part of the cup body is arranged on the base, the cover part covers the upper part of the cup body, and the inner bottom of the base is provided with a liquid extraction opening; a filter assembly is arranged on the base, the filter assembly comprises absorption paper and a filter membrane, and the base and the cup body form a container for containing liquid. According to the equal-grid filter box for detecting strain culture, beverage in a container is subjected to suction filtration by using a filter membrane through a liquid suction opening in the bottom, so that strains and impurities in the beverage are retained on the filter membrane through the filter membrane; due to the fact that the one-way valve is arranged on the liquid extraction opening and the breathable film is arranged on the cover portion on the top for sealing connection, the filter box can be used for directly culturing separated bacterial colonies and other impurities. And the marking grids are arranged on the surface of the filtering membrane, so that the number of cultured bacterial colonies can be conveniently counted.

Description

Technical Field

[0001] The utility model relates to the field of liquid detection, in particular to an equal-grid filter box for detecting bacterial culture. Background Art

[0002] Bacterial culture in beverage testing is a common microbiological testing method used to detect whether there are harmful bacteria or microbial contamination in beverages. Bacterial culture can provide a preliminary understanding of whether there is bacterial contamination in the beverage, as well as the type and quantity of bacteria. This is very important for ensuring the hygiene and safety of beverages and quality control.

[0003] Usually, it is necessary to sample the bacteria in the test sample during the test. Usually, a sterile sampler is used for sampling. The bacteria in the beverage are separated from a certain amount of beverage, and then the bacteria are cultured. After a period of culture, observe whether colonies appear, and make a preliminary identification based on the number and morphological characteristics of the colonies. The product quality of the beverage can be determined by observing and counting the cultured colonies.

[0004] In view of the above, it is necessary to propose an equal-grid filter box for detecting bacterial culture to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the above technical problems and provide an equal grid filter box for detecting bacterial culture.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an equal-grid filter box for detecting bacterial culture, comprising a base, a cup body, and a cover, wherein the cup body is in a cylindrical tube shape, the upper and lower ends of the cup body are connected, the lower part of the cup body is installed on the base, the cover part covers the upper part of the cup body, and the inner bottom of the base is provided with a liquid extraction port;

[0007] The base is provided with a filter assembly, which comprises absorbent paper and a filter membrane. The base and the cup body form a container for containing liquid.

[0008] Furthermore, the liquid extraction port is arranged at the center of the base, and the inner bottom of the base is a funnel-shaped structure with a low center and high edges, and the edges are arranged as bevels toward the center for easy diversion.

[0009] Furthermore, the edge of the base is provided with a first step edge and a second step edge in sequence, the radius of the first step edge is smaller than that of the second step edge, the first step edge is used to support the placement of absorbent paper, and the second step edge is used to support the placement of a filter membrane.

[0010] Furthermore, a radial flow guide support rib is provided at the inner bottom of the base, the bottom of the radial flow guide support rib is arranged on the bevel, and the upper end surface of the radial flow guide support rib is flush with the first step.

[0011] Furthermore, a plurality of ventilation openings are provided on the lower edge of the base, and the upper opening of the base is sleeved on the lower part of the cup body and is provided with a socket.

[0012] Furthermore, the cup body is made of a transparent material, and a liquid level scale is provided on the surface of the cup body.

[0013] Furthermore, the cover portion includes a buckled cover edge, which is sealed and buckled on the upper end opening of the cup body. A ventilation hole is provided at the center of the cover portion, and a breathable membrane is provided in the ventilation hole.

[0014] Furthermore, a one-way valve is provided in the liquid extraction port, and the one-way valve controls the flow direction of the fluid from top to bottom.

[0015] Furthermore, a grid-shaped marking grid is provided on the upper surface of the filter membrane.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the utility model is an equal-grid filter box for detecting bacterial culture, which utilizes the liquid extraction port at the bottom to extract the beverage in the container using a filter membrane, thereby utilizing the filter membrane to retain the bacteria and impurities in the beverage on the filter membrane; since a one-way valve is provided at the liquid extraction port and a breathable membrane is also provided at the top cover for sealing connection, the filter box can be used to directly culture separated bacterial colonies and other impurities; and a marking grid is provided on the surface of the filter membrane, which can facilitate the counting of the number of cultured colonies. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of an equal-grid filter box for detecting bacterial culture in the utility model;

[0018] Figure 2 This is a schematic diagram of the assembly of an equal-grid filter box for detecting bacterial culture according to the utility model;

[0019] Figure 3 is a schematic diagram of the longitudinal section of the base;

[0020] Figure 4 A three-dimensional diagram of the base;

[0021] Figure 5 is a top view of the cover;

[0022] Figure 6 It is a structural schematic diagram of a cup body in the prior art;

[0023] Figure 7 is a top view of the filter membrane;

[0024] In the figure: 1. base; 2. cup body; 3. cover; 4. liquid extraction port; 5. absorbent paper; 6. filter membrane; 7. bevel; 8. first step edge; 9. second step edge; 10. radial guide support rib; 11. ventilation opening; 12. socket; 13. liquid level scale; 14. buckle cover edge; 15. air hole; 16. breathable membrane; 17. one-way valve; 18. marking grid; 19. side opening. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0026] An isocell filter box for detecting bacterial culture, such as Figure 1-5 As shown, it includes a base 1, a cup body 2, and a cover 3. The cup body 2 is in the shape of a cylindrical tube. The cup body 2 can be installed on the base 1 so that the base 1 and the cup body 2 form a container for holding liquid. The cup body 2 is made of a transparent material, and a liquid level scale 13 is provided on the surface of the cup body 2. When in use, the cup body 2 is installed on the base 1, and a certain amount of the beverage to be tested is poured into the container through the liquid level scale 13, and then the cover 3 is covered on the cup body 2. The upper and lower ends of the cup body 2 are connected, and the lower part of the cup body 2 is installed on the base 1. The inner bottom of the base 1 is provided with a liquid extraction port 4; the liquid extraction port 4 can be connected to a suction filter to extract the beverage inside the cup body 2, and then the impurities, bacteria, etc. in the beverage are retained on the filter membrane 6 by using the internal filtering component, as shown in FIG. Figure 2 As shown, the filter assembly includes absorbent paper 5 and a filter membrane 6.

[0027] The liquid extraction port 4 is arranged at the center of the base 1, and the inner bottom of the base 1 is a funnel-shaped structure with a low center and high edges, and the edges are arranged as bevel edges 7 toward the center for the convenience of guiding. Figure 3 As shown, in order to make the liquid extraction process easier, the base 1 is designed to be funnel-shaped without leaving any dead corners. The bevel 7 of the funnel can be used to guide the beverage completely to the central liquid extraction port 4.

[0028] Further, such as Figure 3 , 4As shown, the edge of the base 1 is provided with a first step edge 8 and a second step edge 9 in sequence, the radius of the first step edge 8 is smaller than that of the second step edge 9, the first step edge 8 is used to support the placement of absorbent paper 5, and the second step edge 9 is used to support the placement of filter membrane 6, the absorbent paper 5 is placed on the filter membrane 6 to form a flat plane, the absorbent paper 5 has a certain support, so that the thinner filter membrane 6 can be flat; further, the inner bottom of the base 1 is provided with radial guide support ribs 10, the radial guide support The bottom of the support rib 10 is arranged on the bevel 7, and the upper end surface of the radial flow guiding support rib 10 is flush with the first step edge 8. The first step edge 8 is used to support the edge of the absorbent paper 5, and the radially distributed radial flow guiding support ribs 10 can support the inner position of the absorbent paper 5 to form a horizontal shape; when the filtration is performed, the liquid first passes through the filter membrane 6, then passes through the absorbent paper 5, and then falls between the radial flow guiding support ribs 10, and a guide groove leading to the liquid extraction port 4 is formed between adjacent support ribs, so as to facilitate the liquid to flow into the liquid extraction port 4. Figure 3 As shown, a one-way valve 17 is provided in the liquid extraction port 4, and the one-way valve 17 controls the flow direction of the fluid from top to bottom; when extracting liquid, the one-way valve 17 can prevent the liquid from flowing back; at the same time, when cultivating the bacterial colonies on the filter membrane 6, the liquid extraction port 4 can be closed to prevent the outside air and impurities from entering the cup body 2 and affecting the bacterial colonies. In actual use, the one-way valve 17 can be made of flexible silicone material into an elastic diaphragm structure, and is set to Figure 3 In the structure shown, the diaphragm is in a downward triangular shape, so when the flow is downward, the diaphragm can be pushed to open; while when the flow is in the opposite direction, the diaphragms on both sides will be squeezed toward the middle to close the liquid extraction port 4.

[0029] like Figure 4 As shown, the lower edge of the base 1 is provided with a plurality of ventilation openings 11, and the upper opening of the base 1 is sleeved on the lower part of the cup body 2 and provided with a socket 12. Since the lower edge of the base 1 is flush, it is easy to be adsorbed on the plane when placed on the plane, and the ventilation openings 11 are provided to make the internal and external air pressures the same, avoiding being adsorbed on the table.

[0030] The cover portion 3 includes a buckle cover edge 14, such as Figure 5 As shown, the buckle cover edge 14 is sealingly buckled on the upper end opening of the cup body 2. When the cover 3 is buckled on the cup body 2, the buckle cover edge 14 forms a seal with the cup body 2. An air hole 15 is provided at the center of the cover 3, and an air permeable membrane 16 is provided in the air hole 15. In this embodiment, the air hole 15 is provided at the top, so that air can be added to the cup body 2 during filtration, and in order to prevent bacteria in the outside air from entering the cup body 2, the air permeable membrane 16 in the air hole 15 can isolate the bacteria in the outside air on the air permeable membrane 16, so that only air can enter the cup body 2 for replenishment. In contrast, in the prior art, Figure 6As shown, the way to add air to the cup body 2 is to open a side opening 19 on the upper edge of the cup body 2. When the cover 3 is closed, the side opening 19 is not sealed, and air is introduced into the cup body 2 through the side opening 19. This can easily cause foreign bacteria to enter the cup body 2 and interfere with the accuracy of the colony.

[0031] Furthermore, a grid-shaped marking grid 18 is provided on the upper surface of the filter membrane 6. After a period of culture, obvious colonies may appear on the filter membrane 6, and technicians need to count and count them. The grid-shaped marking grid 18 can automatically divide the cultured colonies into regions, which is convenient for technicians to identify.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An equal-grid filter box for detecting bacterial culture, characterized in that: The invention comprises a base (1), a cup body (2), and a cover (3); the cup body (2) is in the shape of a cylindrical tube, the upper and lower ends of the cup body (2) are connected, the lower part of the cup body (2) is mounted on the base (1), the cover (3) covers the upper part of the cup body (2), and the inner bottom of the base (1) is provided with a liquid extraction port (4); The base (1) is provided with a filter assembly, the filter assembly comprising absorbent paper (5) and a filter membrane (6), and the base (1) and the cup body (2) form a container for containing liquid.

2. The equal-grid filter box for detecting bacterial culture according to claim 1, characterized in that: The liquid extraction port (4) is arranged at the center of the base (1); the inner bottom of the base (1) is a funnel-shaped structure with a low center and high edges; the edges are arranged as bevels (7) toward the center to facilitate flow diversion.

3. The equal-grid filter box for detecting bacterial culture according to claim 2, characterized in that: The edge of the base (1) is provided with a first step edge (8) and a second step edge (9) in sequence, the radius of the first step edge (8) being smaller than that of the second step edge (9), the first step edge (8) being used to support the placement of absorbent paper (5), and the second step edge (9) being used to support the placement of a filter membrane (6).

4. The equal-grid filter box for detecting bacterial culture according to claim 3, characterized in that: The inner bottom of the base (1) is provided with a radial flow guiding support rib (10), the bottom of the radial flow guiding support rib (10) is arranged on the bevel (7), and the upper end surface of the radial flow guiding support rib (10) is flush with the first step edge (8).

5. The equal-grid filter box for detecting bacterial culture according to claim 1, characterized in that: The lower edge of the base (1) is provided with a plurality of ventilation openings (11), and the upper opening of the base (1) is sleeved on the lower part of the cup body (2) and is provided with a socket (12).

6. The equal-grid filter box for detecting bacterial culture according to claim 1, characterized in that: The cup body (2) is made of a transparent material, and a liquid level scale (13) is provided on the surface of the cup body (2).

7. The equal-grid filter box for detecting bacterial culture according to claim 1, characterized in that: The cover portion (3) comprises a buckle cover edge (14), the buckle cover edge (14) is sealingly buckled on the upper end opening of the cup body (2), a vent hole (15) is provided at the center of the cover portion (3), and a vent film (16) is provided in the vent hole (15).

8. The equal-grid filter box for detecting bacterial culture according to claim 1, characterized in that: A one-way valve (17) is provided in the liquid extraction port (4), and the one-way valve (17) controls the flow direction of the fluid from top to bottom.

9. The equal-grid filter box for detecting bacterial culture according to claim 1, characterized in that: The upper surface of the filter membrane (6) is provided with a grid-shaped marking grid (18).

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