Microorganism sampling and analyzing device for drinking purified water

Abstract

The utility model provides a drinking purified water microbe sampling analysis device, including disposable sterile sampling filter bag, sterile tweezers and petri dish, be equipped with the filter component in disposable sterile sampling filter bag, the filter component includes detachable sealed combination's upper cover and lower cover, be equipped with the filter membrane in the middle, after completion sampling and filtration, the filter membrane is equipped with the sterile tweezers and the petri dish. The filter component can be opened, the filter membrane is pushed out by pushing the drainage channel, then the filter membrane is taken out by sterile tweezers, and the filter membrane is placed in a culture dish for microbial culture and analysis. The device can complete sampling and filtering at one time, the filtering step only needs to be manually and slightly extruded without depending on other equipment, the device is convenient and rapid, the device can be used at any time, the workload of drinking purified water microorganism detection is greatly simplified, the working efficiency is improved, and the device is suitable for popularization and application and wide in market prospect.

Description

Technical Field

[0001] This utility model belongs to the field of microbial analysis and detection technology, and specifically relates to a microbial sampling and analysis device for drinking purified water. Background Technology

[0002] Purified water may contain microorganisms such as bacteria, viruses, and parasites, so it needs to be tested for microorganisms. The tests include coliform bacteria, total bacterial count, and pathogenic bacteria (such as Pseudomonas aeruginosa and Salmonella). These tests can ensure the safety and hygiene of drinking purified water.

[0003] Currently, the testing of purified water typically includes the following steps: 1. Sampling; 2. Filtration; 3. Microbial culture. All three steps must be completed in a sterile operating room. Moreover, the filtration process usually requires the use of a precision triple membrane filter connected to a vacuum pump. This is not only expensive but also cumbersome to operate. Each operation requires cleaning, sterilization, and replacement and assembly of new filter membranes, which brings great trouble to the microbial testing of purified water.

[0004] Therefore, there is an urgent need to find a microbial sampling and analysis device that is simple in structure, easy to operate, and particularly suitable for drinking purified water. Utility Model Content

[0005] To address the aforementioned problems, this invention provides a microbial sampling and analysis device for drinking purified water, comprising a disposable sterile sampling filter bag, sterile tweezers, and a petri dish. The disposable sterile sampling filter bag contains a filter component, which includes a detachable, sealed upper and lower cover with a filter membrane in between. After sampling and filtration, the filter component can be opened, and the filter membrane can be pushed out by pushing the drainage channel. The filter membrane is then removed with sterile tweezers and placed in a petri dish for microbial culture and analysis. This device allows for simultaneous sampling and filtration, requiring only slight manual squeezing during the filtration process. It requires no additional equipment, is convenient and quick, and can be used immediately, greatly simplifying the workload of microbial testing in drinking purified water, improving work efficiency, and is suitable for widespread application with broad market prospects.

[0006] On one hand, a microbial sampling and analysis device for drinking purified water is characterized by comprising a disposable sterile sampling filter bag, wherein the disposable sterile sampling filter bag is provided with a filter component, and the filter component is provided with a filter membrane. After sampling and filtration are completed, the filter component can be opened and the filter membrane can be taken out for microbial detection.

[0007] Microbial sampling and analysis of drinking water requires aseptic filtration, followed by removal of the filter membrane for microbial culture. Therefore, the steps of aseptic filtration and filter membrane removal are crucial to prevent contamination by other microorganisms that could affect the accuracy of the test results.

[0008] Furthermore, it also includes sterile forceps and a petri dish, the sterile forceps being used to remove the filter membrane from the filter element and place it in the petri dish for microbial culture and analysis.

[0009] Furthermore, the filter component includes an upper cover and a lower cover, which are detachable, and the filter membrane is located between the upper cover and the lower cover.

[0010] Furthermore, the upper cover is provided with a first support net, and the lower cover is provided with a second support net, and the filter membrane is sandwiched and fixed between the first support net and the second support net.

[0011] When the upper and lower covers are combined, the filter membrane is clamped and fixed by the first and second support nets; when the upper and lower covers are separated, the filter membrane is located inside the lower cover.

[0012] Furthermore, the lower cover has an upwardly extending edge with internal threads that can be rotated and sealed with the external threads of the upper cover.

[0013] Furthermore, the bottom surface of the lower cover is provided with a drain outlet, and a drainage channel passes through the drain outlet; the drainage channel is made of plastic, matches the size of the drain outlet, and is sealed with a rubber ring.

[0014] Furthermore, a support plate is provided at the upper end of the drainage channel, and a through hole connected to the drainage channel is provided in the middle of the support plate; the support plate is located above the drain outlet and is larger than the drain outlet; the second support net is located above the support plate; when the drainage channel is pushed upward, the support plate moves upward and the filter membrane can be pushed upward.

[0015] Because the edge of the lower cover extends upwards, when opening both the upper and lower covers to remove the filter membrane, if sterile forceps are directly inserted into the lower cover, they can easily come into contact with its edge. Furthermore, because the filter membrane is compressed, removal is not easy and requires considerable force from the sterile forceps. During removal, the filter membrane is also likely to touch the edge of the lower cover. Since the edge of the lower cover is in contact with the outside environment, it may harbor bacteria that could affect the test results.

[0016] This invention features a drainage channel made of rigid plastic and a support plate connected to the drainage channel on the bottom surface of the lower cover. By pushing the support plate upward through the drainage channel, the filter membrane can be pushed out through the support plate, eliminating the need for sterile tweezers. This effectively prevents the filter membrane or tweezers from contacting the edge of the lower cover during the removal process. It also allows the compressed filter membrane to loosen in advance, making it easier to remove with sterile tweezers and improving the accuracy of microbial analysis and detection.

[0017] The drainage channel is relatively long, so the sterile environment of the filter components will not be affected during the discharge of filtrate to the outside.

[0018] Furthermore, the upper cover is provided with a sealing ring, which is used to prevent water samples from leaking between the upper and lower covers when the upper and lower covers are combined.

[0019] Furthermore, a sealing cap is provided at the outlet of the drainage channel, and the liquid can be drained out by removing the sealing cap.

[0020] Furthermore, the sterile sampling filter bag has a sampling port at the top, and the sampling port has a sealing zipper. The sampling port has a sealing opening and a tear-opening notch above the sealing zipper to facilitate tearing and sampling.

[0021] After taking a sample by tearing open the seal, it can be resealed using the zipper. The sterile sampling bag can then be placed in a sterile operating environment. The sealing cap of the drainage channel can be opened, and the bag can be manually squeezed to complete the filtration. Since drinking water contains very few impurities, the filtration process is relatively easy; only slight squeezing is needed to complete the filtration.

[0022] In some methods, the filter membrane used for pure water testing has a pore size of 0.45 μm to intercept microorganisms in the water; the disposable sterile sampling filter bag has a capacity of 250 ml.

[0023] The beneficial effects of the microbial sampling and analysis device for drinking purified water provided by this utility model are as follows:

[0024] 1. Sampling and filtration can be completed in one step using disposable sterile sampling filter bags, without relying on other equipment. The structure is simple, the operation is convenient, and the samples can be used immediately, thus reducing costs.

[0025] 2. The structure of the filter component has been improved, making it easier to open and remove the filter membrane for testing after filtration, avoiding contamination by other microorganisms and improving the accuracy of microbial detection;

[0026] 3. Greatly simplifies the workload of microbial testing in drinking water and improves work efficiency;

[0027] 4. Simple structure, easy to achieve industrial production. Attached Figure Description

[0028] Figure 1 A schematic diagram of the overall structure of a microbial sampling and analysis device for drinking purified water;

[0029] Figure 2 An exploded view of a disposable aseptic sampling filter bag;

[0030] Figure 3 This is a schematic diagram of the upper cover structure;

[0031] Figure 4 This is an exploded view of the lower cover structure;

[0032] Figure 5This is a schematic diagram of the process of pushing out the filter membrane in the lower cover;

[0033] Figure 6 This is a cross-sectional view of the process of pushing out the filter membrane in the lower cover. Detailed Implementation

[0034] The preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. It should be noted that the following embodiments are intended to facilitate the understanding of the present invention and do not limit it in any way. All features disclosed in the embodiments of the present invention, or all steps in all methods or processes disclosed, can be combined in any way except for mutually exclusive features and / or steps.

[0035] Example 1: Microbial sampling and analysis device provided by this utility model

[0036] This embodiment provides a microbial sampling and analysis device 1 for drinking purified water, as shown in the example. Figure 1 As shown, it includes a disposable sterile sampling filter bag 2, sterile forceps 3, and a petri dish 4. The disposable sterile sampling filter bag 2 is equipped with a filter component 5, and the filter component 5 is equipped with a filter membrane 6. After sampling and filtration are completed, the filter component 5 can be opened, and the filter membrane 6 can be removed from the filter component 5 with sterile forceps 3 and placed in the petri dish 4 for microbial culture and analysis.

[0037] like Figure 2 As shown, the filter component 5 includes an upper cover 7 and a lower cover 8, which are detachable. The filter membrane 6 is located between the upper cover 7 and the lower cover 8. The upper cover 7 has a first support mesh 9, and the lower cover 8 has a second support mesh 10. The filter membrane 6 is sandwiched and fixed between the first support mesh 9 and the second support mesh 10. When the upper cover 7 and the lower cover 8 are separated, the filter membrane 6 is located inside the lower cover 8.

[0038] like Figures 4-6As shown, the lower cover 8 has an upwardly extending edge 11 with an internal thread 12, which can be rotated and sealed with the external thread 13 of the upper cover 7. The bottom surface 13 of the lower cover 8 has a drain outlet 14, through which a drainage channel 17 passes. The drainage channel 17 is made of rigid plastic, matches the size of the drain outlet 14, and is sealed with a rubber ring 24. A support plate 15 is located at the upper end of the drainage channel 17, with a through hole 16 in the middle communicating with the drainage channel 17. The support plate 15 is located above the drain outlet 14 and is larger than the drain outlet 14. A second support mesh 10 is located above the support plate 15. After the filtrate is drained from the drainage channel 17 by hand, pushing the drainage channel 17 upwards causes the support plate 15 to move upwards, pushing the filter membrane 6 upwards. Preferably, the bottom surface 13 of the lower cover 8 also has a groove 26 for placing the support plate 15, helping to stabilize the support plate 15. A sealing cap 19 is provided at the outlet 18 of the drainage channel 17. The liquid can be drained by removing the sealing cap 19. The drainage channel 17 is relatively long, so the sterile environment of the filter element will not be affected during the discharge of filtrate to the outside.

[0039] like Figure 3 As shown, the upper cover 7 is provided with a sealing ring 25. When the upper cover 7 and the lower cover 8 are combined, the sealing ring 25 is used to prevent water samples from leaking between the upper cover 7 and the lower cover 8.

[0040] like Figure 2 As shown, the aseptic sampling filter bag 2 has a sampling port 20 at its upper end, and a sealing zipper 21 at the sampling port 20. Above the sealing zipper 21, the sampling port 20 has a sealing opening 22 and a tear-off notch 23 for easy opening and sampling. After sampling is completed by tearing open the sealing opening 22, it can be resealed through the sealing zipper 21. The aseptic sampling filter bag 2 can then be placed in a sterile operating environment, and the sealing cap 19 of the drain channel 17 can be opened. Filtration is completed by manually squeezing the bag. Since drinking purified water contains very few impurities, the filtration process is relatively easy; only slight squeezing is needed to complete the filtration. In this embodiment, the filter membrane used for purified water testing has a pore size of 0.45 μm to intercept microorganisms in the water; the capacity of the disposable aseptic sampling filter bag is 250 ml.

[0041] The application of this utility model is not limited to this. It can be expanded according to its application scope in environmental protection. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of this invention; therefore, the scope of protection of this utility model should be determined by the scope defined in the claims.

Claims

1. A microbial sampling and analysis device for drinking purified water, characterized in that, The invention includes a disposable sterile sampling filter bag, which contains a filter component and a filter membrane. After sampling and filtration, the filter component can be opened to remove the filter membrane for microbial detection. The filter component includes an upper cover and a lower cover, which are detachable. The filter membrane is located between the upper and lower covers. The upper cover contains a first support mesh, and the lower cover contains a second support mesh. The filter membrane is sandwiched and fixed between the first and second support meshes.

2. The microbial sampling and analysis device as described in claim 1, characterized in that, It also includes sterile forceps and a petri dish, the sterile forceps being used to remove the filter membrane from the filter element and place it in the petri dish for microbial culture and analysis.

3. The microbial sampling and analysis device as described in claim 2, characterized in that, The lower cover has an upwardly extending edge with internal threads that can be rotated and sealed with the external threads of the upper cover.

4. The microbial sampling and analysis device as described in claim 3, characterized in that, The bottom surface of the lower cover is provided with a drain outlet, and a drainage channel passes through the drain outlet; the drainage channel is made of plastic, matches the size of the drain outlet, and is sealed with a rubber ring.

5. The microbial sampling and analysis device as described in claim 4, characterized in that, The upper end of the drainage channel is provided with a support plate, and the middle of the support plate is provided with a through hole that communicates with the drainage channel; the support plate is located above the drain outlet and is larger than the drain outlet; the second support net is located above the support plate; when the drainage channel is pushed upward, the support plate moves upward and the filter membrane can be pushed upward.

6. The microbial sampling and analysis device as described in claim 5, characterized in that, The upper cover is equipped with a sealing ring. When the upper cover and the lower cover are combined, the sealing ring is used to prevent water samples from leaking between the upper cover and the lower cover.

7. The microbial sampling and analysis device as described in claim 6, characterized in that, The outlet of the drainage channel is equipped with a sealing cap; removing the sealing cap allows for drainage.

8. The microbial sampling and analysis device as described in claim 7, characterized in that, The sterile sampling filter bag has a sampling port at the top, and the sampling port has a sealing zipper. The sampling port has a sealing opening and a tear-opening notch above the sealing zipper for easy tearing and sampling.

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