Device for sampling microorganisms on inner wall of ventilation pipe

Abstract

The utility model relates to the technical field of microorganism sampling assistance, and discloses a device for sampling microorganisms on the inner wall of a ventilation pipe, which comprises a hollow support rod and a fixed cylinder, a rotating rod is inserted in the hollow support rod, a rotating handle is fixedly mounted at the left end of the rotating rod, a fixed column is fixedly mounted at the right end of the fixed cylinder, and a plurality of through holes are formed in the fixed column. Opening and closing sampling parts are arranged in the fixed cylinder and on the outer side of the fixed column; a sleeve ring can be driven to slide rightwards through rotation of a threaded rod, so that a sleeve can be driven to slide along the outer side of a supporting column through an inclined rod, an arc plate can be driven to approach the inner wall of the pipeline until a scraping plate abuts against the inner wall of the pipeline, at the moment, a whole hollow supporting rod is rotated, and microorganisms bred on the inner wall of the pipeline can be scraped into a storage bin of the arc plate through the scraping plate; then the non-woven fabric pad can be taken out and put into a detector to detect the microorganisms, so that the microorganisms at different positions of the inner wall of the pipeline can be sampled and collected, sampling can be performed at one time, and the efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary technology for microbial sampling, specifically a device for sampling microorganisms from the inner wall of a ventilation duct. Background Technology

[0002] Air ducts are hollow tubular devices mainly used for air transport, distribution, or gas exchange. Their core functions are to achieve indoor and outdoor air circulation, regulate the concentration of harmful gases, or assist the operation of specific equipment. After long-term use, a large number of microorganisms and bacteria will accumulate on the inner wall of the duct. Therefore, it is necessary to sample and test the microorganisms on the inner surface of the ventilation duct to determine whether the ventilation duct needs to be cleaned.

[0003] Existing sampling devices can generally only sample local microorganisms on the inner wall of pipes. However, ventilation pipes are mostly circular, so microorganisms will be distributed around the pipe. Therefore, it is necessary to pull the sampling rod back and forth to obtain microbial samples from different locations on the inner wall of the pipe. This makes the operation cumbersome, and the sampling position is not accurate enough, which will affect the result of determining whether the ventilation pipe needs to be cleaned. Therefore, further improvements are needed. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides the following technical solution: a device for sampling microorganisms from the inner wall of a ventilation duct, comprising a hollow support rod and a fixed cylinder. The fixed cylinder is fixedly installed at the right end of the hollow support rod, and a rubber sleeve is fitted on the outer side of the left end of the hollow support rod. A rotating rod is inserted into the interior of the hollow support rod, and a rotating handle is fixedly installed at the left end of the rotating rod. Four sets of sliding grooves are arrayed on the outer side of the fixed cylinder, and a fixed column is fixedly installed at the right end of the fixed cylinder. An opening and closing sampling component is provided inside the fixed cylinder and outside the fixed column.

[0005] As an optimization, the outer side of the rubber sleeve is provided with an anti-slip groove. The rotating rod passes through the hollow support rod and is inserted into the fixed cylinder. By holding the rubber sleeve, the friction force is increased when holding the hand. By rotating the handle, the rotating rod will rotate synchronously, which will then transmit the power to the opening and closing sampling component inside the fixed cylinder.

[0006] As an optimization, the opening and closing sampling component includes a threaded rod rotatably connected inside the fixed cylinder, a collar slidably connected inside the fixed cylinder, a support fixedly installed on the outer side of the collar, an inclined rod rotatably connected to the end of the support, a support column fixedly installed on the outer side of the fixed column, a sleeve sleeved on the outer side of the support column, a support plate fixedly installed on the side of the sleeve opposite to the support, an arc plate fixedly installed on the end of the sleeve away from the fixed column, scrapers fixedly installed on both sides of the top of the arc plate, and a non-woven fabric pad provided inside the arc plate.

[0007] As an optimization, the left end of the threaded rod and the rotating rod are fixedly installed, and the right end of the threaded rod is rotatably connected to the center of the left side of the fixed column. The collar has a threaded hole in the middle, and the collar is threaded onto the outside of the threaded rod through the threaded hole. The rotation of the rotating rod will drive the threaded rod to rotate synchronously, which will cause the collar to slide along the inner wall of the fixed cylinder.

[0008] As an optimization, the lower half of the support is slidably connected in the groove, and the support is arranged in a groove array. The support will slide synchronously along the inner wall of the groove by sliding the collar.

[0009] As an optimization, the support column is arranged in a corresponding support array, and the other end of the diagonal bar is rotatably connected to the end of the support plate. The diagonal bar is pushed by the sliding of the support, which causes the four sets of diagonal bars to open outward, thereby driving the sleeve to slide outward along the support column.

[0010] As an optimization, the arc plate has an arc-shaped structure and a storage compartment is opened inside the arc plate. The scraper has a right-angled triangular cross-section. The non-woven fabric pad is placed in the storage compartment. The sleeve slides outward along the support column, which will drive the arc plate around it to approach the inner wall of the ventilation pipe. Then, the tip of the scraper abuts against the inner wall of the ventilation pipe. Then, the whole is rotated, so that the scraper scrapes the microbial community accumulated on the inner wall of the pipe into the storage compartment of the arc plate.

[0011] The beneficial effects of this utility model are:

[0012] This device for sampling microorganisms on the inner wall of ventilation ducts rotates by rotating a rotating rod, which in turn causes a threaded rod to rotate synchronously. This causes a collar to slide to the right along the inner wall of a fixed cylinder. Consequently, the sleeve slides along the outer side of the support column via a diagonal rod, which in turn causes the arc plate to approach the inner wall of the duct until the scraper abuts against the inner wall of the duct. Therefore, it can adapt to ventilation ducts of different sizes, improving its practicality.

[0013] This device for sampling microorganisms on the inner wall of ventilation ducts involves raising an arc plate and rotating the hollow support rod. This causes a scraper to scrape the microorganisms growing on the inner wall of the duct into the collection chamber of the arc plate. Then, the non-woven fabric pad can be removed and placed into a detector to detect the microorganisms. This allows for sampling of microorganisms at different locations on the inner wall of the duct, and the sampling can be performed in one go, improving efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the opening and closing sampling component of this utility model;

[0017] Figure 4 This is a schematic diagram of the opening and closing sampling component of this utility model.

[0018] In the diagram: 1. Hollow support rod; 2. Fixed cylinder; 3. Rubber sleeve; 4. Rotating rod; 5. Rotary handle; 6. Slide groove; 7. Fixed column; 8. Opening and closing sampling component; 9. Threaded rod; 10. Collar; 11. Support; 12. Diagonal rod; 13. Support column; 14. Sleeve; 15. Support plate; 16. Arc plate; 17. Scraper; 18. Non-woven fabric pad. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-2 A device for sampling microorganisms from the inner wall of a ventilation duct includes a hollow support rod 1 and a fixed cylinder 2. The fixed cylinder 2 is fixedly installed at the right end of the hollow support rod 1. A rubber sleeve 3 is fitted on the outer side of the left end of the hollow support rod 1. The outer side of the rubber sleeve 3 has an anti-slip groove to increase the friction when holding the rubber sleeve 3. A rotating rod 4 is inserted into the hollow support rod 1 and passes through the hollow support rod 1 into the fixed cylinder 2. A handle 5 is fixedly installed at the left end of the rotating rod 4. Four sets of sliding grooves 6 are arrayed on the outer side of the fixed cylinder 2. A fixed column 7 is fixedly installed at the right end of the fixed cylinder 2. An opening and closing sampling component 8 is provided inside the fixed cylinder 2 and outside the fixed column 7.

[0021] Please see Figure 3-4 The opening and closing sampling component 8 includes a threaded rod 9 rotatably connected inside the fixed cylinder 2. The left end of the threaded rod 9 is fixedly installed with the rotating rod 4, and the right end of the threaded rod 9 is rotatably connected to the center of the left side of the fixed column 7. A collar 10 is slidably connected inside the fixed cylinder 2. A threaded hole is opened in the middle of the collar 10. The collar 10 is threadedly fitted on the outside of the threaded rod 9 through the threaded hole. The rotation of the rotating rod 4 will drive the threaded rod 9 to rotate synchronously, which will cause the collar 10 to slide along the inner wall of the fixed cylinder 2.

[0022] Please see Figure 3-4A support 11 is fixedly installed on the outer side of the collar 10. The lower half of the support 11 is slidably connected in the groove 6, and the support 11 is arranged in an array corresponding to the groove 6. The support 11 will slide synchronously along the inner wall of the groove 6 by sliding the collar 10. A diagonal rod 12 is rotatably connected to the end of the support 11. A support column 13 is fixedly installed on the outer side of the fixed column 7. The support column 13 is arranged in an array corresponding to the support 11. A sleeve 14 is sleeved on the outer side of the support column 13. A support plate 15 is fixedly installed on the side of the sleeve 14 opposite to the support 11. The other end of the diagonal rod 12 is rotatably connected to the end of the support plate 15. The support 11 slides to give the diagonal rod 12 a thrust, which will cause the four sets of diagonal rods 12 to open outward, thereby driving the sleeve 14 to slide outward along the support column 13.

[0023] Please see Figure 3-4 An arc plate 16 is fixedly installed at the end of the sleeve 14 away from the fixed column 7. The arc plate 16 has an arc-shaped structure and a storage compartment inside. Scrapers 17 are fixedly installed on both sides of the top of the arc plate 16. The cross-section of the scraper 17 is a right-angled triangle. A non-woven fabric pad 18 is placed inside the arc plate 16. The non-woven fabric pad 18 is placed in the storage compartment. As the sleeve 14 slides outward along the column 13, it will drive the arc plates 16 around it to approach the inner wall of the ventilation pipe. Then, the tip of the scraper 17 will abut against the inner wall of the ventilation pipe. Then, the whole thing is rotated so that the scraper 17 scrapes the microbial community accumulated on the inner wall of the pipe into the storage compartment of the arc plate 16. The non-woven fabric pad 18 makes it easy to take out the microbial community for sampling.

[0024] Please refer to the following when using it. Figure 1-4 First, hold the rubber sleeve 3 and lift the hollow support rod 1. Then, slowly insert the opening and closing sampling component 8, which is set at the fixed cylinder 2, into the ventilation duct. When the opening and closing sampling component 8 reaches the appropriate position, turn the handle 5 to drive the rotating rod 4 to rotate, which in turn will drive the threaded rod 9 to rotate synchronously inside the fixed cylinder 2. Therefore, the collar 10 will slide to the right along the inner wall of the fixed cylinder 2, which will push the inclined rod 12 to open outward through the support 11. Therefore, the sleeve 14 will slide outward along the support 13, which will then drive the arc plate 16 to move closer to the inside of the duct. The scraper 17 stops rotating when it comes into contact with the inner wall of the pipe. At this point, the hollow support rod 1 is rotated as a whole, which causes the scraper 17 to rotate along the inner wall of the pipe. This scrapes the microbial community that has accumulated on the inner wall of the pipe into the collection chamber in the arc plate 16. Then, the handle 5 is rotated in the opposite direction. Similarly, the arc plate 16 will retract inward and move away from the inner wall of the pipe. Then, the opening and closing sampling component 8 is slowly removed from the pipe. At this time, the non-woven pad 18 is removed from the arc plate 16, which makes it easier to collect the microbial community. Then, an external detector is used to detect it.

[0025] In summary, this device for sampling microorganisms on the inner wall of ventilation ducts rotates the rotating rod 4 to drive the threaded rod 9 to rotate synchronously, which in turn causes the collar 10 to slide to the right along the inner wall of the fixed cylinder 2. Therefore, the inclined rod 12 causes the sleeve 14 to slide along the outer side of the support column 13, which in turn causes the arc plate 16 to approach the inner wall of the pipe until the scraper 17 abuts against the inner wall of the pipe. Therefore, it can adapt to ventilation ducts of different sizes and improve its practicality.

[0026] After the arc plate 16 is raised, the hollow support rod 1 is rotated as a whole, so the scraper 17 scrapes the microorganisms growing on the inner wall of the pipe into the collection chamber of the arc plate 16. Then, the non-woven fabric pad 18 can be taken out and placed into the detector to detect the microorganisms. This allows for the sampling and collection of microorganisms at different locations on the inner wall of the pipe, and the sampling can be done at one time, improving efficiency.

[0027] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A device for sampling microorganisms from the inner wall of a ventilation duct, comprising a hollow support rod (1) and a fixed cylinder (2), characterized in that: The fixed cylinder (2) is fixedly installed on the right end of the hollow support rod (1). A rubber sleeve (3) is fitted on the outer side of the left end of the hollow support rod (1). A rotating rod (4) is inserted into the hollow support rod (1). A handle (5) is fixedly installed on the left end of the rotating rod (4). Four sets of sliding grooves (6) are arrayed on the outer side of the fixed cylinder (2). A fixed column (7) is fixedly installed on the right end of the fixed cylinder (2). An opening and closing sampling component (8) is provided inside the fixed cylinder (2) and outside the fixed column (7). The opening and closing sampling component (8) includes a threaded rod (9) rotatably connected inside the fixed cylinder (2). A collar (10) is slidably connected inside the fixed cylinder (2). A support (11) is fixedly installed on the outer side of the collar (10). A diagonal rod (12) is rotatably connected to the end of the support (11). A support column (13) is fixedly installed on the outer side of the fixed column (7). A sleeve (14) is sleeved on the outer side of the support column (13). A support plate (15) is fixedly installed on the side of the sleeve (14) opposite to the support (11). An arc plate (16) is fixedly installed at the end of the sleeve (14) away from the fixed column (7). Scrapers (17) are fixedly installed on both sides of the top of the arc plate (16). A non-woven fabric pad (18) is provided inside the arc plate (16).

2. The device for sampling microorganisms from the inner wall of a ventilation duct according to claim 1, characterized in that: The rubber sleeve (3) has an anti-slip groove on its outer side, and the rotating rod (4) passes through the hollow support rod (1) and is inserted into the fixed cylinder (2).

3. The device for sampling microorganisms from the inner wall of a ventilation duct according to claim 1, characterized in that: The left end of the threaded rod (9) and the rotating rod (4) are fixedly installed. The right end of the threaded rod (9) is rotatably connected to the center of the left side of the fixed column (7). The collar (10) has a threaded hole in the middle and is threadedly fitted onto the outside of the threaded rod (9) through the threaded hole.

4. The device for sampling microorganisms from the inner wall of a ventilation duct according to claim 1, characterized in that: The lower half of the support (11) is slidably connected in the groove (6), and the support (11) is arranged in an array corresponding to the groove (6).

5. The device for sampling microorganisms from the inner wall of a ventilation duct according to claim 1, characterized in that: The support column (13) is arranged in an array corresponding to the support (11), and the other end of the diagonal bar (12) is rotatably connected to the end of the support plate (15).

6. The device for sampling microorganisms from the inner wall of a ventilation duct according to claim 1, characterized in that: The arc plate (16) has an arc-shaped structure, and a storage compartment is provided inside the arc plate (16). The scraper (17) has a right-angled triangular cross section, and the non-woven fabric pad (18) is placed inside the storage compartment.

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