Livestock environment microorganism aerosol sampling device
Patent Information
- Application Number
- CN202522153594.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-11
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-10-11
AI Technical Summary
[0002]微生物气溶胶是指悬浮在空气中的微生物形成的胶体体系，在畜牧养殖环境中，微生物气溶胶可能包含各种病菌、病毒和真菌等，影响畜禽的健康，因此，会使用采样装置对畜牧养殖环境中的微生物气溶胶进行采样，通过检测和分析样品，提前预防和避免疫病的传播，保障畜禽的健康，现有的采样装置包括多个层叠放置的筛盘，多个筛盘通过三个弹簧挂钩组合成一体，在采样前和采样后，需要用力按住层叠放置的筛盘，然后逐一取下弹簧挂钩，才能逐层放置和取下培养皿，使得培养皿的放置和拿出不方便，且在实际操作逐一取下弹簧挂钩时，会因为弹簧挂钩向一侧的拉力，以及操作人员未按住层叠放置的筛盘，而出现层叠放置的筛盘侧倒的情况，导致筛盘或完成采样后的培养皿受到污染，对采样结果造成影响，无法准确分析畜牧环境微生物气溶胶的种类、浓度变化
由于畜牧环境微生物气溶胶采样装置包括筒体、盖体和底座，将筒体和底座螺纹连接在一起，然后滑动架放置于筒体内，再将盖体螺纹安装于筒体上，即完成了本装置的组装，与现有的采样装置相比，本实用新型采用螺纹连接的组装方式，避免了侧倒而导致的污染问题，确保了采样结果的准确性。
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Figure CN224704615U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of microbial sampling technology, and in particular to a microbial aerosol sampling device for livestock environments. Background Technology
[0002] Microbial aerosols refer to colloidal systems formed by microorganisms suspended in the air. In livestock farming environments, microbial aerosols may contain various pathogens, viruses, and fungi, affecting the health of livestock and poultry. Therefore, sampling devices are used to sample microbial aerosols in livestock farming environments. By detecting and analyzing the samples, the spread of diseases can be prevented and avoided in advance, ensuring the health of livestock and poultry. Existing sampling devices consist of multiple stacked sieve trays, which are connected by three spring hooks. Before and after sampling, the stacked sieve trays need to be pressed firmly, and then the spring hooks need to be removed one by one to place and remove the petri dishes layer by layer. This makes it inconvenient to place and remove the petri dishes. In actual operation, when removing the spring hooks one by one, the stacked sieve trays may tip over due to the pull of the spring hooks to one side and the operator not pressing the stacked sieve trays, resulting in contamination of the sieve trays or the petri dishes after sampling, affecting the sampling results and making it impossible to accurately analyze the types and concentration changes of microbial aerosols in the livestock environment.
[0003] Therefore, there is a need for a livestock environment microbial aerosol sampling device to solve the above problems. Utility Model Content
[0004] This invention proposes a microbial aerosol sampling device for livestock environments. By pressing the component to move the sliding frame, the opening and sealing of the petri dish placement port can be achieved, facilitating the quick placement and removal of petri dishes, simplifying the operation process, and improving work efficiency.
[0005] The technical solution of this utility model is implemented as follows: A livestock environment microbial aerosol sampling device includes a cylindrical body with open ends. A base and a cover are threadedly connected to each end of the cylindrical body. An exhaust pipe is provided on the base, and a pair of air inlets are provided on the cover. The cylindrical body wall has two pairs of vertically arranged petri dish placement openings. A sliding frame is slidably installed vertically inside the cylindrical body. The sliding frame includes a first sieve tray, a second sieve tray, and a support tray arranged sequentially from top to bottom. A pair of support columns are fixedly installed between the first and second sieve trays, and between the second sieve tray and the support tray. Three positioning columns for positioning the petri dishes are fixedly installed on the top of both the second sieve tray and the support tray. A sampling channel is formed between the sliding frame and the cylindrical body. Both ends of the sampling channel are connected to the air inlets and the exhaust pipe, respectively. A pair of compression springs are fixedly installed on the upper surface of the base, and the two compression springs are located between the support tray and the base. A pressing component is provided on the cover.
[0006] As a preferred technical solution, the pressing component includes a guide sleeve disposed at the bottom of the cover. The side wall of the guide sleeve is evenly distributed with a plurality of guide grooves. The lower end of each guide groove is open. A locking groove is provided at the lower end of the guide sleeve between two adjacent guide grooves. A push rod and a sliding claw sleeve are sleeved inside the guide sleeve. The upper end of the push rod protrudes through the upper surface of the cover. The sliding claw sleeve is disposed between the push rod and the first sieve plate.
[0007] As a preferred technical solution, the push rod is hollow, and a plurality of guide blocks are provided on the outer circumferential surface of the push rod. Each guide block is slidably installed in a corresponding guide groove, and a toothed ring is provided at the lower end of the push rod.
[0008] As a preferred technical solution, the upper end of the sliding pawl sleeve extends into the push rod, and a plurality of guide strips are evenly distributed on the outer circumferential surface of the sliding pawl sleeve. The upper end of each guide strip is provided with an inclined end face that is adapted to the toothed ring. The guide strip is slidably installed in the corresponding guide groove, or the top of the guide strip abuts against the corresponding locking groove.
[0009] As a preferred technical solution, the outer peripheral surfaces of the first screen plate, the second screen plate, and the support plate are all adapted to the inner peripheral surface of the cylinder. The first screen plate is provided with a plurality of first vent holes, the second screen plate is provided with a plurality of second vent holes, and the support plate is provided with through holes. The diameter of the first vent holes is larger than the diameter of the second vent holes.
[0010] By adopting the above technical solution, the beneficial effects of this utility model are as follows: Since the livestock environment microbial aerosol sampling device includes a cylinder, a cover and a base, the cylinder and the base are threaded together, the sliding frame is placed inside the cylinder, and the cover is threaded onto the cylinder, thus completing the assembly of the device. Compared with existing sampling devices, this utility model adopts a threaded connection assembly method, which avoids the pollution problem caused by tilting and ensures the accuracy of the sampling results.
[0011] The livestock environment microbial aerosol sampling device includes a pressing component and a pressing push rod. The toothed ring of the push rod abuts against the inclined end face of the guide strip. The push rod pushes the sliding claw sleeve to move downward in the guide sleeve. Under the guidance of the inclined toothed surface of the toothed ring, the sliding claw sleeve rotates relative to the guide sleeve, causing the guide strip to move downward synchronously and move from the locking groove to the guide groove. Under the action of the compression spring, the guide block moves upward in the guide groove. At this time, the support plate and the second sieve plate also move upward synchronously to below the corresponding petri dish placement opening. The sliding frame is offset from the petri dish placement opening, and the petri dish placement opening is in an open state.
[0012] Press the push rod again, and the push rod will push the sliding pawl sleeve to slide downward. Under the guidance of the inclined tooth surface of the toothed ring, the sliding pawl sleeve rotates relative to the guide sleeve, so that the guide bar moves downward synchronously and moves from the guide groove to the locking groove. The sliding frame moves downward synchronously. At this time, the outer circumferential surfaces of the first sieve plate and the second sieve plate will seal the petri dish placement opening.
[0013] This invention features a pressing component. By simply pressing the push rod, the support plate and the second sieve plate move to the corresponding petri dish placement opening. The locking groove and guide bar work together to lock the pressed sliding claw sleeve, allowing for the placement and removal of petri dishes. Unlike existing sampling devices, which require removing the spring hooks one by one, this invention greatly simplifies the operation process and improves work efficiency. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the overall structure of the machine incorporating this utility model; Figure 2 for Figure 1 Top view of the utility model; Figure 3 When sampling for this utility model Figure 2 Sectional view along the middle AA direction; Figure 4For the purpose of this utility model when placing or removing the petri dish Figure 2 Sectional view along the BB direction; Figure 5 for Figure 3 Schematic diagram of the middle sliding frame; Figure 6 for Figure 3 A structural schematic diagram of the middle cover from one perspective; Figure 7 for Figure 3 A structural schematic diagram of the middle cover from another perspective; Figure 8 for Figure 3 Schematic diagram of the push rod structure; Figure 9 for Figure 3 Schematic diagram of the middle sliding claw sleeve; Figure 10 for Figure 2 A schematic diagram of the structure of the positioning column.
[0016] The components are as follows: 1. Cylinder; 2. Base; 3. Cover; 4. Suction pipe; 5. Air inlet; 6. Petri dish placement port; 7. Sliding rack; 8. Petri dish; 9. Compression spring; 10. Push rod; 11. Sliding claw sleeve; 12. Guide sleeve; 13. Guide groove; 14. Locking groove; 15. Support column; 16. Toothed ring; 17. Guide strip; 18. Inclined end face; 19. First sieve tray; 20. Second sieve tray; 21. Support tray; 22. First vent hole; 23. Second vent hole; 24. Through hole; 25. Guide block; 26. Positioning column; 27. Positioning groove; 28. Main unit; 29. Tripod; 30. Bolt; 31. Hoses; 32. Sampling medium. Detailed Implementation
[0017] 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.
[0018] like Figures 1-10As shown in the diagram, the livestock environment microbial aerosol sampling device includes a cylindrical body 1 with open ends. A base 2 and a cover 3 are threadedly connected to both ends of the cylindrical body 1. An air extraction pipe 4 is provided on the base 2, and a pair of air inlets 5 are provided on the cover 3. The cylindrical body 1 has two pairs of vertically arranged petri dish placement openings 6. A sliding frame 7 is slidably installed vertically inside the cylindrical body 1. The sliding frame 7 includes a first sieve plate 19, a second sieve plate 20, and a support plate 21 arranged sequentially from top to bottom. The first sieve plate 19 and the second sieve plate 20 are positioned between each other, and the second sieve plate 20 and the support plate 21 are positioned between each other. Each of the two plates is fixedly equipped with a pair of support columns 15. The top of the second sieve plate 20 and the support plate 21 are fixedly equipped with three positioning columns 26 for positioning the petri dishes 8. A sampling channel is formed between the sliding frame 7 and the cylinder 1. The two ends of the sampling channel are connected to the air inlet 5 and the air extraction pipe 4, respectively. A pair of compression springs 9 are fixedly installed on the upper surface of the base 2. The two compression springs 9 are located between the support plate 21 and the base 2. The cover 3 is equipped with a pressing component for sealing the two pairs of petri dish placement ports 6 of the sliding frame 7 or for moving the two petri dishes 8 to the corresponding petri dish placement ports 6.
[0019] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the pressing assembly includes a guide sleeve 12 disposed at the bottom of the cover 3. Several guide grooves 13 are evenly distributed on the side wall of the guide sleeve 12. The lower end of each guide groove 13 is open. A locking groove 14 is provided at the lower end of the guide sleeve 12 between two adjacent guide grooves 13. A push rod 10 and a sliding claw sleeve 11 are sleeved inside the guide sleeve 12. The upper end of the push rod 10 extends through the upper surface of the cover 3. The sliding claw sleeve 11 is disposed between the push rod 10 and the first screen plate 19.
[0020] like Figure 4 and Figure 8 As shown, the push rod 10 is hollow, and a number of guide blocks 25 are provided on the outer circumferential surface of the push rod 10. Each guide block 25 is slidably installed in the corresponding guide groove 13, and a toothed ring 16 is provided at the lower end of the push rod 10.
[0021] like Figure 4 and Figure 9 As shown, the upper end of the sliding pawl sleeve 11 extends into the push rod 10. Several guide strips 17 are evenly distributed on the outer circumferential surface of the sliding pawl sleeve 11. The upper end of each guide strip 17 is provided with an inclined end face 18 that is adapted to the toothed ring 16. The guide strip 17 is slidably installed in the corresponding guide groove 13, or the top of the guide strip 17 abuts against the corresponding locking groove 14.
[0022] like Figure 3As shown, the outer circumferential surfaces of the first screen plate 19, the second screen plate 20, and the support plate 21 are all adapted to the inner circumferential surface of the cylinder 1. The first screen plate 19 is provided with a plurality of first vent holes 22, the second screen plate 20 is provided with a plurality of second vent holes 23, and the support plate 21 is provided with through holes 24. The diameter of the first vent holes 22 is larger than the diameter of the second vent holes 23.
[0023] like Figure 10 As shown, each positioning column 26 is provided with a positioning groove 27, and each petri dish 8 is located in the corresponding three positioning grooves 27. By fixing three positioning columns 26 on the top of the support plate 21 and the second sieve plate 20 respectively, each petri dish 8 is limited by the positioning grooves 27 of the corresponding three positioning columns 26.
[0024] like Figure 1 As shown, the present invention, the main unit 28 and the tripod 29 constitute a complete sampling device for microbial aerosols in livestock environment. The main unit 28 and the tripod 29 are existing technologies well known to those skilled in the art, and will not be described in detail here. In use, the base 2 is installed on the tripod 29 by bolts 30, and the suction pipe 4 is connected to the suction nozzle of the main unit 28 by a flexible hose 31.
[0025] The method of using this utility model is as follows: First, connect the cylinder 1 and the base 2 together by thread. Then, place the sliding frame 7 inside the cylinder 1 and then thread the cover 3 onto the upper end of the cylinder 1.
[0026] The second step involves pressing the push rod 10, causing the toothed ring 16 to abut against the inclined end face 18. This pushes the push rod 10, causing the sliding pawl sleeve 11 to move downwards within the guide sleeve 12. Guided by the inclined tooth surface of the toothed ring 16, the sliding pawl sleeve 11 rotates relative to the guide sleeve 12. Simultaneously, the guide bar 17 moves downwards and from the locking groove 14 into the guide groove 13. Under the action of the compression spring 9, the push rod 10 and the sliding pawl sleeve 11 move upwards simultaneously until the guide block 25 abuts against the upper end of the guide groove 13. Figure 4 As shown in the status, at this time, the support plate 21 and the second sieve plate 20 also move upward synchronously to the bottom of the corresponding culture dish placement port 6, and place the culture dish 8 containing the sampling medium 32 on the support plate 21 and the second sieve plate 20 respectively.
[0027] Thirdly, press the push rod 10. The push rod 10 pushes the sliding pawl sleeve 11 to slide downwards. Guided by the inclined tooth surface of the toothed ring 16, the sliding pawl sleeve 11 rotates relative to the guide sleeve 12. The guide bar 17 moves downwards synchronously and moves from the guide groove 13 into the locking groove 14. The sliding frame 7 moves downwards synchronously. Figure 3As shown in the diagram, at this time, the outer circumferential surfaces of the first sieve plate 19 and the second sieve plate 20 seal the petri dish placement opening 6. The main unit 28 is activated, and air from the livestock environment is drawn into the cylinder 1 through the air inlet 5. After passing through the sampling channel, the air is drawn away by the main unit 28. Microorganisms in the air are absorbed by the sampling medium 32 within the petri dish 8. The airflow path is as follows: Figure 3 As shown.
[0028] Fourth step: After sampling is completed, press the push rod 10. The push rod 10 pushes the sliding pawl sleeve 11 downward. Guided by the inclined tooth surface of the toothed ring 16, the sliding pawl sleeve 11 rotates relative to the guide sleeve 12. The guide bar 17 moves downward synchronously and moves from the locking groove 14 into the guide groove 13. Under the action of the compression spring 9, the push rod 10 and the sliding pawl sleeve 11 move upward synchronously until the guide block 25 abuts against the upper end of the guide groove 13. Figure 4 As shown in the status, at this time, the two petri dishes 8 are moved to the corresponding petri dish placement port 6, and the petri dishes 8 on the support plate 21 and the second sieve plate 20 are taken out from the petri dish placement port 6, thus completing the sampling work.
[0029] In summary, this invention achieves both opening and sealing of the petri dish placement opening by pushing the sliding frame with a pressing component, facilitating the quick placement and removal of the petri dish.
[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A livestock environment microbial aerosol sampling device, characterized in that, The device includes a cylindrical body with open ends. A base and a cover are threadedly connected to each end of the cylindrical body. An air extraction pipe is provided on the base, and a pair of air inlets are provided on the cover. The cylindrical body has two pairs of vertically arranged petri dish placement openings on its wall. A sliding frame is slidably mounted vertically inside the cylindrical body. The sliding frame includes a first sieve tray, a second sieve tray, and a support tray arranged sequentially from top to bottom. A pair of support columns are fixedly installed between the first and second sieve trays, and between the second sieve tray and the support tray. Three positioning columns for positioning the petri dishes are fixedly installed on the top of both the second sieve tray and the support tray. A sampling channel is formed between the sliding frame and the cylindrical body. Both ends of the sampling channel are connected to the air inlets and the air extraction pipe, respectively. A pair of compression springs are fixedly installed on the upper surface of the base, and the two compression springs are positioned between the support tray and the base. A pressing component is provided on the cover.
2. The livestock environment microbial aerosol sampling device according to claim 1, characterized in that, The pressing assembly includes a guide sleeve disposed at the bottom of the cover. Several guide grooves are evenly distributed on the side wall of the guide sleeve. The lower end of each guide groove is open. A locking groove is provided at the lower end of the guide sleeve between two adjacent guide grooves. A push rod and a sliding claw sleeve are sleeved inside the guide sleeve. The upper end of the push rod protrudes through the upper surface of the cover. The sliding claw sleeve is disposed between the push rod and the first sieve plate.
3. The livestock environment microbial aerosol sampling device according to claim 2, characterized in that, The push rod is hollow, and a number of guide blocks are provided on the outer circumference of the push rod. Each guide block is slidably installed in a corresponding guide groove, and a toothed ring is provided at the lower end of the push rod.
4. The livestock environment microbial aerosol sampling device according to claim 3, characterized in that, The upper end of the sliding claw sleeve extends into the push rod. Several guide strips are evenly distributed on the outer circumferential surface of the sliding claw sleeve. The upper end of each guide strip is provided with an inclined end face that matches the toothed ring. The guide strip is slidably installed in the corresponding guide groove, or the top of the guide strip abuts against the corresponding locking groove.
5. The livestock environment microbial aerosol sampling device according to claim 1, characterized in that, The outer peripheral surfaces of the first sieve plate, the second sieve plate, and the support plate are all adapted to the inner peripheral surface of the cylinder. The first sieve plate is provided with a plurality of first vent holes, the second sieve plate is provided with a plurality of second vent holes, and the support plate is provided with through holes. The diameter of the first vent holes is larger than the diameter of the second vent holes.