A microbial filtration and culture device with a rapidly replaceable filter membrane.

Abstract

This utility model relates to the field of microbial detection technology and discloses a microbial filtration and culture device with a rapidly replaceable filter membrane. It includes a culture dish, an installation ring on the inner side of the dish, a filter membrane mounted on the installation ring, an arc-shaped sealing plate fixedly mounted on one side of the installation ring, an arc-shaped opening on one side of the culture dish, the sealing plate in close contact with the inner wall of the arc-shaped opening, a push-pull plate fixedly mounted on one side of the sealing plate with a limiting groove, and an installation block fixedly mounted on one side of the culture dish. In this utility model, the installation ring moves the filter membrane outwards from the culture dish until the installation ring and filter membrane are completely moved to the outside of the culture dish through the arc-shaped opening. The filter membrane can then be removed from the installation ring. After the installation ring and sealing plate are cleaned and disinfected, a new filter membrane can be placed on the installation ring, completing the rapid replacement of the filter membrane and effectively improving the efficiency of filter membrane replacement.

Description

Technical Field

[0001] This invention belongs to the field of microbial detection technology, specifically, it relates to a microbial filtration and culture device with a rapidly replaceable filter membrane. Background Technology

[0002] In the process of microbial detection, membrane filtration is a commonly used method. The principle is to pass a certain amount of liquid sample to be tested through a microporous membrane, which traps microorganisms in the liquid sample. The membrane is then placed on a designated culture medium or a support surface soaked in culture medium for incubation. By counting and identifying the colonies growing on the membrane, the number of microorganisms contained in the sample is calculated based on the volume of the filtered sample.

[0003] In microbial detection, filtration primarily serves to improve detection sensitivity, separate microorganisms, and remove impurities, ensuring the accuracy of the culture. However, filter membranes in traditional culture devices are typically installed in complex structures, requiring tedious disassembly and replacement by laboratory personnel, consuming significant time and effort, resulting in low filter membrane replacement efficiency. Therefore, this invention proposes a microbial filtration culture device with a rapidly replaceable filter membrane to address the problem of low filter membrane replacement efficiency. Utility Model Content

[0004] To address the problem of low filter membrane replacement efficiency, the basic concept of the technical solution adopted in this utility model is as follows:

[0005] A microbial filtration and culture device with a rapidly replaceable filter membrane includes a culture dish. An installation ring is disposed on the inner side of the culture dish, and a filter membrane is mounted on the installation ring. An arc-shaped sealing plate is fixedly disposed on one side of the installation ring. An arc-shaped opening is formed on one side of the culture dish, and the sealing plate is in close contact with the inner wall of the arc-shaped opening. A push-pull plate is fixedly disposed on one side of the sealing plate, and a limiting groove is formed on the push-pull plate. An installation block is fixedly disposed on one side of the culture dish, and a movable groove is formed on the top of the installation block. A wedge-shaped limiting block is slidably disposed on the inner wall of the movable groove, and the limiting block is connected to the limiting groove. A first spring is formed on the inner wall of the bottom of the movable groove, and the top of the first spring is connected to the outer wall of the bottom of the limiting block. A movable opening is formed on one side of the installation block, and a connecting block is slidably disposed on the inner wall of the movable opening, and the connecting block is fixedly connected to the outer wall of one side of the limiting block.

[0006] In a preferred embodiment of the present invention, the top of the culture dish is threadedly connected to a top cover, and a sealing gasket is fixedly provided on the inner wall of the top of the top cover, and the sealing gasket is in close contact with the top of the culture dish.

[0007] In a preferred embodiment of this utility model, a support ring is fixedly provided on the inner wall of the bottom of the mounting ring, and the bottom of the filter membrane is in contact with the outer wall of the top of the support ring.

[0008] In a preferred embodiment of the present invention, a fixing rod is fixedly provided on one side of the culture dish, a sliding groove is provided inside the fixing rod, and a limiting rod is slidably provided on the inner wall of the sliding groove, the limiting rod extending to the outside of the fixing rod.

[0009] In a preferred embodiment of this utility model, a limiting hole is provided on the connecting block, the limiting rod is adapted to the limiting hole, and a second spring is connected to the end of the limiting rod, with one end of the second spring connected to the inner wall of one side of the slide groove.

[0010] In a preferred embodiment of this utility model, a through hole is provided on one side of the fixing rod, and a sliding rod is slidably provided on the inner wall of the through hole. One end of the sliding rod is fixedly connected to the end position of the limiting rod, and the second spring is sleeved on the sliding rod.

[0011] In a preferred embodiment of this utility model, symmetrically arranged connecting seats are fixedly installed on both sides of the petri dish, and a connecting groove is opened on one side of the connecting seat. Symmetrically arranged connecting rods are fixedly installed on both sides of the sealing plate, and the connecting rods are connected to the connecting grooves.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] In this invention, when the filter membrane needs to be replaced, the limiting position of the push-pull plate is released, and then the push-pull plate is pulled to move. The push-pull plate moves the sealing plate and the mounting ring, causing the mounting ring to move the filter membrane to the outside of the culture dish until the mounting ring and the filter membrane are completely moved to the outside of the culture dish through the arc-shaped opening. Then the filter membrane can be removed from the mounting ring. After the mounting ring and the sealing plate are cleaned and disinfected, a new filter membrane can be placed on the mounting ring, completing the rapid replacement of the filter membrane. This effectively improves the efficiency of filter membrane replacement and reduces the operation time and effort of the experimental personnel.

[0014] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the main structure of a microbial filtration and culture device with a rapidly replaceable filter membrane according to the present invention.

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the culture dish and top cover of a microbial filtration culture device with a rapidly replaceable filter membrane according to the present invention.

[0018] Figure 3This is a schematic diagram of the culture dish structure of a microbial filtration culture device with a rapidly replaceable filter membrane according to the present invention.

[0019] Figure 4 This is a schematic diagram of the mounting ring and filter membrane structure of a microbial filtration and culture device with a rapidly replaceable filter membrane according to this utility model.

[0020] Figure 5 This is a schematic diagram of the installation ring cross-section structure of a microbial filtration and culture device with a rapidly replaceable filter membrane according to the present invention.

[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of the push-pull plate, mounting block, and fixing rod of a microbial filtration and culture device with a quickly replaceable filter membrane according to this utility model.

[0022] Figure 7 This is a schematic diagram of the cross-sectional structure of the connecting seat of a microbial filtration and culture device with a rapidly replaceable filter membrane according to the present invention.

[0023] In the diagram: 1. Petri dish; 2. Top cover; 3. Arc-shaped opening; 4. Sealing plate; 5. Push-pull plate; 6. Mounting block; 7. Connecting seat; 8. Fixing rod; 9. Sealing gasket; 10. Mounting ring; 11. Filter membrane; 12. Limiting groove; 13. Connecting rod; 14. Support ring; 15. Movable groove; 16. Limiting block; 17. First spring; 18. Connecting block; 19. Limiting hole; 20. Limiting rod; 21. Second spring; 22. Sliding rod; 23. Movable opening; 24. Connecting groove. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0025] like Figures 1 to 7 As shown

[0026] A microbial filtration and culture device with a rapidly replaceable filter membrane includes a petri dish 1. An installation ring 10 is disposed inside the petri dish 1, and a filter membrane 11 is mounted on the installation ring 10. When a certain amount of liquid sample to be tested is placed in the petri dish 1, the filter membrane 11 traps microorganisms in the liquid sample, achieving the effect of separating microorganisms and removing impurities. A support ring 14 is fixedly disposed on the inner wall of the bottom of the installation ring 10, and the bottom of the filter membrane 11 contacts the outer wall of the top of the support ring 14. A filter membrane 11 is fixedly disposed on one side of the installation ring 10. A sealing plate 4 with an arc-shaped structure is provided. An arc-shaped opening 3 is provided on one side of the petri dish 1. The sealing plate 4 is in close contact with the inner wall of the arc-shaped opening 3. A push-pull plate 5 is fixedly provided on one side of the sealing plate 4. A limiting groove 12 is provided on the push-pull plate 5. An installation block 6 is fixedly provided on one side of the petri dish 1. A movable groove 15 is provided on the top of the installation block 6. A wedge-shaped limiting block 16 is slidably provided on the inner wall of the movable groove 15. The limiting block 16 is connected to the limiting groove 12. A first spring 17 is provided on the inner wall of the bottom of the movable groove 15. The first spring 17 is located at the top of the groove. The end is connected to the bottom outer wall of the limiting block 16. A movable opening 23 is provided on one side of the mounting block 6. A connecting block 18 is slidably disposed on the inner wall of the movable opening 23. The connecting block 18 is fixedly connected to the outer wall of one side of the limiting block 16. When the filter membrane 11 needs to be replaced, the connecting block 18 is pressed down, causing the connecting block 18 to move the limiting block 16 down, thus disengaging the limiting block 16 from the limiting groove 12 and releasing the limiting of the push-pull plate 5. Then, the push-pull plate 5 is pulled outward from the arc-shaped opening 3 along the radial direction of the culture dish 1. The push-pull plate 5 moves the sealing plate 4, which in turn moves the mounting ring 10. This causes the mounting ring 10 to move the filter membrane 11 to the outside of the petri dish 1 until the mounting ring 10 and the filter membrane 11 are completely moved to the outside of the petri dish 1 through the arc-shaped opening 3. Then the filter membrane 11 can be removed from the mounting ring 10. After the mounting ring 10, support ring 14, and sealing plate 4 have been cleaned and disinfected, a new filter membrane 11 can be placed on the mounting ring 10 to complete the quick replacement of the filter membrane 11.

[0027] In a specific embodiment, a top cover 2 is threadedly connected to the top of the petri dish 1. A sealing gasket 9 is fixedly installed on the inner wall of the top of the top cover 2, and the sealing gasket 9 is in close contact with the top of the petri dish 1. Symmetrically arranged connecting seats 7 are fixedly installed on both sides of the petri dish 1. A connecting groove 24 is opened on one side of the connecting seat 7. Symmetrically arranged connecting rods 13 are fixedly installed on both sides of the sealing plate 4, and the connecting rods 13 are connected to the connecting grooves 24. A fixing rod 8 is fixedly installed on one side of the petri dish 1. A sliding groove is opened in the fixing rod 8, and a limiting rod 20 is slidably installed on the inner wall of the sliding groove. The limiting rod 20 extends to the outside of the fixing rod 8. A limiting hole 19 is opened on the connecting block 18, and the limiting rod 20 is adapted to the limiting hole 19. A second spring 2 is connected to the end of the limiting rod 20. 1. One end of the second spring 21 is connected to the inner wall of the slide groove. A through hole is provided on one side of the fixed rod 8, and a slide rod 22 is slidably provided on the inner wall of the through hole. One end of the slide rod 22 is fixedly connected to the end of the limiting rod 20. The second spring 21 is sleeved on the slide rod 22. When the limit of the push-pull plate 5 is released, the connecting block 18 is continuously pressed down, so that the connecting block 18 squeezes the limiting rod 20 into the fixed rod 8 during the downward movement until the limiting hole 19 opened on the connecting block 18 moves to the side of the limiting rod 20. At this time, under the action of the second spring 21, the limiting rod 20 can be pushed into the limiting hole 19, realizing the positioning function of the connecting block 18, so that the limiting block 16 is positioned, avoiding obstruction when replacing the filter membrane 11.

[0028] The implementation principle of the microbial filtration and culture device with a rapidly replaceable filter membrane in this embodiment is as follows:

[0029] When a certain amount of liquid sample to be tested is placed in the petri dish 1, the filter membrane 11 traps microorganisms in the liquid sample to achieve the effect of separating microorganisms and removing impurities, thereby improving the detection sensitivity. When the filter membrane 11 needs to be replaced, press the connecting block 18 to move it downward. The connecting block 18 drives the limiting block 16 to move downward, so that the limiting block 16 disengages from the limiting groove 12, releasing the limitation on the push-pull plate 5. Then, continue to press down the connecting block 18, so that the connecting block 18 squeezes the limiting rod 20 into the fixed rod 8 during the downward movement, until the limiting hole 19 on the connecting block 18 moves to one side of the limiting rod 20. At this time, under the action of the second spring 21, the limiting rod 20 can be pushed into the limiting hole 19. Inside, the connecting block 18 is positioned, thus positioning the limiting block 16 and preventing obstruction when replacing the filter membrane 11. Then, the push-pull plate 5 is pulled outward from the arc-shaped opening 3 along the radial direction of the culture dish 1. The push-pull plate 5 moves the sealing plate 4, which in turn moves the mounting ring 10. This causes the mounting ring 10 to move the filter membrane 11 to the outside of the culture dish 1 until the mounting ring 10 and the filter membrane 11 are completely moved to the outside of the culture dish 1 through the arc-shaped opening 3. Then, the filter membrane 11 can be removed from the mounting ring 10. After the mounting ring 10, support ring 14, and sealing plate 4 are cleaned and disinfected, a new filter membrane 11 can be placed on the mounting ring 10 to complete the quick replacement of the filter membrane 11.

Claims

1. A microorganism filtration culture device with quick replaceable filter membrane, comprising a culture dish (1), characterized in that, An installation ring (10) is provided on the inner side of the petri dish (1), and a filter membrane (11) is installed on the installation ring (10). An arc-shaped sealing plate (4) is fixedly provided on one side of the installation ring (10). An arc-shaped opening (3) is opened on one side of the petri dish (1). The sealing plate (4) is in close contact with the inner wall of the arc-shaped opening (3). A push-pull plate (5) is fixedly provided on one side of the sealing plate (4). A limit groove (12) is opened on the push-pull plate (5). An installation block (6) is fixedly provided on one side of the petri dish (1). The top of the installation block (6) An active groove (15) is provided, and a wedge-shaped limiting block (16) is slidably provided on the inner wall of the active groove (15). The limiting block (16) is connected to the limiting groove (12). A first spring (17) is provided on the bottom inner wall of the active groove (15). The top of the first spring (17) is connected to the bottom outer wall of the limiting block (16). An active opening (23) is provided on one side of the mounting block (6). A connecting block (18) is slidably provided on the inner wall of the active opening (23). The connecting block (18) is fixedly connected to the outer wall of one side of the limiting block (16).

2. The microorganism filtration culture device of claim 1, wherein, The top of the petri dish (1) is threadedly connected to a top cover (2), and a sealing gasket (9) is fixedly provided on the inner wall of the top of the top cover (2), and the sealing gasket (9) is in close contact with the top of the petri dish (1).

3. The microorganism filtration culture device of claim 1, wherein the filter membrane is replaceable. A support ring (14) is fixedly provided on the bottom inner wall of the mounting ring (10), and the bottom of the filter membrane (11) is in contact with the top outer wall of the support ring (14).

4. The microorganism filtration culture device of claim 1, wherein the filter membrane is replaceable. A fixing rod (8) is fixedly installed on one side of the culture dish (1). A sliding groove is opened in the fixing rod (8), and a limiting rod (20) is slidably installed on the inner wall of the sliding groove. The limiting rod (20) extends to the outside of the fixing rod (8).

5. A microbial filtration and culture device with a rapidly replaceable filter membrane according to claim 4, characterized in that, The connecting block (18) has a limiting hole (19), the limiting rod (20) is adapted to the limiting hole (19), and the end of the limiting rod (20) is connected to a second spring (21), one end of the second spring (21) is connected to the inner wall of the slide groove.

6. The microorganism filtration culture device of claim 5, wherein the filter membrane is replaced quickly. The fixed rod (8) has a through hole on one side, and a slide rod (22) is slidably provided on the inner wall of the through hole. One end of the slide rod (22) is fixedly connected to the end position of the limiting rod (20), and the second spring (21) is sleeved on the slide rod (22).

7. The microorganism filtration culture device of claim 1, wherein the filter membrane is replaceable. The petri dish (1) is fixedly installed with symmetrically arranged connecting seats (7) on both sides. A connecting groove (24) is opened on one side of the connecting seat (7). The sealing plate (4) is fixedly installed with symmetrically arranged connecting rods (13) on both sides. The connecting rods (13) are connected to the connecting groove (24).

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