Aseptic sampling device for liquid pipelines
By designing a sterile sampling device for liquid pipelines, utilizing ultraviolet disinfection and a sealing structure, the problem of sampling bottles being contaminated in the external environment is solved, achieving sterile sampling, and applicable to industries such as pharmaceuticals and bioengineering.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHUANGZHI BIOTECHNOLOGY (JIANGSU) CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies, when sampling bottles are sealed in the external environment, microorganisms in the air can easily contaminate the samples, resulting in impure samples.
A sterile sampling device for liquid pipelines was designed, comprising a drain pipe, a sampling box, an ultraviolet disinfection lamp, a collection box, and a sealing plug. The sterility of the sampling process is ensured through ultraviolet disinfection and sealing design.
It effectively kills microorganisms, prevents sample contamination, and improves sampling accuracy and reliability, making it suitable for industries sensitive to microbial contamination.
Smart Images
Figure CN224552773U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aseptic sampling technology for pipelines, specifically to an aseptic sampling device for liquid pipelines. Background Technology
[0002] In modern industrial production, many sectors have extremely high requirements for the quality and safety of materials within liquid pipelines, with aseptic sampling being a crucial step in ensuring product quality. For example, in the pharmaceutical industry, raw materials, intermediates, and finished drug solutions undergo rigorous aseptic testing to guarantee the safety and efficacy of medicines. Any microbial contamination can lead to drug deterioration, reduced efficacy, or even serious medical accidents. Similarly, the food and beverage industry strictly controls the microbiological indicators of liquid raw materials, semi-finished products, and finished products during production. From drinking water and fruit juices to dairy products, aseptic sampling plays a decisive role in determining whether products meet hygiene standards and preventing food safety issues caused by microbial contamination. Furthermore, in industries such as bioengineering and cosmetics manufacturing, aseptic sampling of materials within liquid pipelines is also indispensable, directly impacting product quality and consumer health.
[0003] For example, Chinese utility model patent application number 202220674226.X discloses a pipeline liquid sampling device, which enables rapid sampling of flowing liquid in pipelines, is less likely to form sampling blind spots in pipelines, and improves sampling efficiency. However, the device still has certain defects;
[0004] After sampling the liquid in the pipeline, the sampling bottle is sealed in the external environment. The external environment is full of a large number of microorganisms, including bacteria, fungi and viruses, which are suspended in the air or attached to the surface of various objects. When the operator holds the sampling bottle in the external environment to seal it, the microorganisms in the surrounding air are very likely to fall to the bottle mouth in an instant and be sealed into the bottle as the cap is tightened, thus contaminating the sample.
[0005] Therefore, we propose a sterile sampling device for liquid pipelines to address the problems mentioned above. Utility Model Content
[0006] The purpose of this invention is to provide a sterile sampling device for liquid pipelines, in order to solve the problem mentioned in the background art where, after sampling of pipeline liquid is completed, the sampling bottle is sealed in the external environment. The external environment is full of a large number of microorganisms, including bacteria, fungi and viruses, which are suspended in the air or attached to the surface of various objects. When the operator holds the sampling bottle in the external environment to perform the sealing operation, the microorganisms in the surrounding air are very likely to fall to the bottle mouth in an instant and be sealed into the bottle as the cap is tightened, thus contaminating the sample.
[0007] To achieve the above objectives, the present invention provides the following technical solution: a sterile sampling device for liquid pipelines, comprising a drain pipe and a sampling box, wherein a sampling box is installed below the drain pipe and a connecting frame is installed below the sampling box, a threaded rod is installed on the connecting frame, and a placement plate is installed above the threaded rod via a smooth rod, wherein a sampling tube is provided on the placement plate;
[0008] A pull rod runs through the right side of the sampling box, and a liquid collection box is installed on the left side of the pull rod. Limit frames are installed on both the left and right sides of the lower surface of the liquid collection box, and a sealing plug is provided below the limit frame. Elastic strips are installed on both the left and right sides of the sealing plug.
[0009] A waste liquid tank is installed on the right side of the sampling box, and the waste liquid tank is connected to the collection box through a connecting pipe.
[0010] Preferably, ultraviolet disinfection lamps are installed on both the left and right sides of the inner wall of the sampling box, and multiple ultraviolet disinfection lamps are provided, with a control valve installed on the drain pipe.
[0011] The above structural design allows for comprehensive disinfection of the sampling chamber before sampling, effectively killing microorganisms and ensuring a sterile sampling environment. The control valve facilitates control of liquid discharge, preventing unnecessary liquid outflow, ensuring the accuracy and sterility of sampling, and reducing the risk of sample contamination. It is suitable for industries that are extremely sensitive to microbial contamination, such as pharmaceuticals and bioengineering.
[0012] Preferably, the threaded rod is threadedly connected to the connecting frame, the smooth rod passes through the sampling box, a sealing gasket is provided at the connection position between the sampling box and the smooth rod, and the smooth rod is fixedly connected to the placement tray.
[0013] With the above structural design, the height of the placement tray can be precisely adjusted by rotating the threaded rod, so that the sampling tube is accurately aligned with the drain tube. The sealing gasket prevents external microorganisms from entering the sampling box, ensuring a sterile environment during the sampling process and improving the accuracy and reliability of sampling.
[0014] Preferably, fastening bolts are installed on both the left and right sides of the placement plate, and a limiting plate is installed on the opposite side of the fastening bolts. The limiting plate has a circular structure design, and displacement reference lines are coated on the fastening bolts.
[0015] The above structural design can securely fix the sampling tube, ensuring that the sampling tube will not shake or shift during the sampling process.
[0016] Preferably, an anti-slip block is installed on the right side of the pull rod, and a positioning bolt is installed on the anti-slip block. A threaded groove is opened on the right side of the sampling box, and the positioning bolt is threadedly connected to the threaded groove. A sealing gasket is provided at the connection position between the sampling box and the pull rod.
[0017] The above structural design prevents microorganisms from entering through the connection between the pull rod and the sampling box, ensuring a sterile environment inside the sampling box, making the movement and positioning of the collection box more accurate and convenient, and improving the stability of the sampling operation.
[0018] Preferably, the elastic strip is engaged with the limiting frame on the lower surface of the collection box, the inner diameter of the collection box is larger than the inner diameter of the drain pipe, and the sealing plug is engaged with the opening of the sampling tube.
[0019] The above structural design facilitates the installation of the sealing plug, and the collection box can effectively collect the residual liquid in the drain tube. It can also seal the sampling tube inside the sampling box, preventing the sample from being contaminated by microorganisms when sealed in the external environment, thus ensuring the purity of the sample.
[0020] Preferably, the sampling box is equipped with a guide strip inside, the guide strip is located on the rear side of the liquid collection box, and a movable sleeve is installed on the rear side of the liquid collection box through a connecting strip. The movable sleeve is fitted onto the guide strip and is slidably connected to the guide strip. A limit block is installed on the guide strip, and the connecting tube has an elastic and telescopic structure design.
[0021] The above structural design makes the liquid collection box more stable during movement. The limiting block precisely restricts the position of the liquid collection box, making it easy to move it directly above the sampling tube. The connecting tube transports excess liquid to the waste liquid tank, keeping the inside of the sampling box clean and avoiding liquid residue from affecting subsequent sampling, thus improving the practicality and hygiene of the device.
[0022] Compared with the prior art, the beneficial effects of this utility model are: the liquid pipeline uses a sterile sampling device:
[0023] 1. Sealed sampling to prevent contamination: The design of the collection box, sealing plug and elastic strip allows the liquid to be transferred and sealed from the collection box to the sampling tube inside the sampling box, avoiding microbial contamination caused by sealing the sampling tube in the external environment, ensuring the purity of the sample and improving the reliability of the test results.
[0024] 2. Stable movement and waste liquid treatment: The collection box is slidably connected to the guide strip via a movable sleeve, ensuring smooth movement. The connecting tube directs excess liquid into the waste liquid tank, facilitating cleaning of the collection box, keeping the inside of the sampling box clean, and preventing liquid residue from affecting subsequent sampling. It is also environmentally friendly and easy to operate. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the sampling structure of this utility model;
[0026] Figure 2 This is a schematic diagram of the overall right-side structure of the sampling box of this utility model;
[0027] Figure 3 This is a schematic diagram of the structure of the present invention when the sealing plug is installed;
[0028] Figure 4 This is a schematic diagram of the internal structure of the sampling box of this utility model;
[0029] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle;
[0030] Figure 6 This is a schematic diagram of the rear connection structure of the liquid collection box of this utility model.
[0031] In the diagram: 1. Drain pipe; 2. Sampling box; 3. Ultraviolet disinfection lamp; 4. Connecting frame; 5. Threaded rod; 6. Smooth rod; 7. Placement tray; 8. Sampling tube; 9. Fastening bolt; 10. Limiting plate; 11. Pull-out rod; 12. Anti-slip block; 13. Positioning bolt; 14. Threaded groove; 15. Collection box; 16. Limiting frame; 17. Sealing plug; 18. Elastic strip; 19. Connecting strip; 20. Movable sleeve; 21. Guide strip; 22. Limiting block; 23. Waste liquid tank; 24. Connecting pipe. Detailed Implementation
[0032] 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.
[0033] Please see Figures 1-6This utility model provides a technical solution: a sterile sampling device for liquid pipelines, including a drain pipe 1, a sampling box 2, an ultraviolet disinfection lamp 3, a connecting frame 4, a threaded rod 5, a smooth rod 6, a placement tray 7, a sampling tube 8, a fastening bolt 9, a limiting plate 10, a pull rod 11, an anti-slip block 12, a positioning bolt 13, a threaded groove 14, a collection box 15, a limiting frame 16, a sealing plug 17, an elastic strip 18, a connecting strip 19, a movable sleeve 20, a guide strip 21, a limiting block 22, a waste liquid tank 23, and a connecting pipe 24. A [missing information - likely a device name or component] is installed below the drain pipe 1. Sampling box 2 has multiple ultraviolet disinfection lamps 3 installed on both the left and right sides of its inner wall. A control valve is installed on the drain pipe 1. When disinfecting the inside of sampling box 2, the ultraviolet disinfection lamps 3 are turned on to disinfect the interior. Simultaneously, disinfectant solution can be used to disinfect the interior of sampling box 2, ensuring a sterile sampling environment. A connecting frame 4 is installed at the bottom of sampling box 2, and a threaded rod 5 is installed on the connecting frame 4. The threaded rod 5 is threadedly connected to the connecting frame 4. A smooth rod 6 passes through sampling box 2, connecting sampling box 2 and the smooth rod. A sealing gasket is provided at the connection position of 6. The smooth rod 6 is fixedly connected to the placement tray 7. Rotating the threaded rod 5, since the threaded rod 5 is threadedly connected to the connecting frame 4, the smooth rod 6 is fixedly connected to the placement tray 7 and passes through the sampling box 2. The placement tray 7 moves upward under the action of the smooth rod 6 and the threaded rod 5, moving the sampling tube 8 on the placement tray 7 to the lower end of the drain pipe 1. The control valve on the drain pipe 1 is opened, and the liquid in the drain pipe 1 flows into the sampling tube 8, realizing sampling. The placement tray 7 is installed above the threaded rod 5 through the smooth rod 6, and the placement tray 7 is equipped with a sampling device. The sampling tube 8 and the placement tray 7 are both equipped with fastening bolts 9 on both sides, and limit plates 10 are installed on the opposite side of the fastening bolts 9. The limit plates 10 are circular in design. The fastening bolts 9 are coated with displacement reference lines. The sampling tube 8 is placed on the placement tray 7. By rotating the fastening bolts 9, the limit plates 10 are moved. The limit plates 10 are used to firmly fix the sampling tube 8 on the placement tray 7. The displacement reference lines on the fastening bolts 9 can help the operator judge whether the displacement of the left and right fastening bolts 9 is consistent, ensuring that the sampling tube 8 is located directly below the drain tube 1.
[0034] A pull rod 11 runs through the right side of the sampling box 2. An anti-slip block 12 is installed on the right side of the pull rod 11, and a positioning bolt 13 is installed on the anti-slip block 12. A threaded groove 14 is opened on the right side of the sampling box 2, and the positioning bolt 13 is threadedly connected to the threaded groove 14. A sealing gasket is provided at the connection between the sampling box 2 and the pull rod 11. After sampling, the placement tray 7 and the sampling tube 8 are moved downwards away from the drain pipe 1, and then the pull rod 11 is pushed into the sampling box 2. The pull rod 11 drives the collection box 15 to move to the left, moving the collection box 15 directly above the sampling tube 8. Then, the positioning bolt 13 is rotated to connect the positioning bolt 13 with the threaded groove 14, thereby completing the limitation of the pull rod 11 and the limitation of the collection box 15. The collection box 15 is installed on the left side of the pull rod 11. Limit frames 16 are installed on both the left and right sides of the lower surface of the collection box 15, and a sealing plug 17 is provided below the limit frame 16. Elastic strips 18 are installed on both sides of the sealing plug 17. The elastic strips 18 are engaged with the limiting frame 16 on the lower surface of the collection box 15. The inner diameter of the collection box 15 is larger than the inner diameter of the drain pipe 1. The sealing plug 17 is engaged with the opening of the sampling tube 8. When installing the sealing plug 17, the elastic strips 18 on both sides of the sealing plug 17 are directly engaged in the limiting frame 16 below the collection box 15. When the collection box 15 moves to directly above the sampling tube 8, the drain can be discharged simultaneously. The remaining liquid in tube 1 is collected. Then, the threaded rod 5 is rotated, which drives the placement plate 7 and the sampling tube 8 to rotate and move upward, so that the sealing plug 17 below the collection box 15 is screwed into the mouth of the sampling tube 8, thereby sealing the sampling tube 8. Then, the threaded rod 5 drives the placement plate 7 and the sampling tube 8 to move downward. At this time, the sealing plug 17 is disengaged from the collection box 15. Finally, the door of the sampling box 2 is opened, the fastening bolt 9 is loosened, and the sampling tube 8 can be taken out.
[0035] A waste liquid tank 23 is installed on the right side of the sampling box 2, and the waste liquid tank 23 is connected to the collection box 15 through a connecting pipe 24. A guide bar 21 is installed inside the sampling box 2. The guide bar 21 is located on the rear side of the collection box 15. A movable sleeve 20 is installed on the rear side of the collection box 15 through a connecting bar 19. The movable sleeve 20 is fitted onto the guide bar 21 and is slidably connected to the guide bar 21. A limit block 22 is installed on the guide bar 21. The connecting pipe 24 has an elastic and telescopic structure design. When the collection box 15 is moved left and right under force, it can drive the connecting bar 19 and the movable sleeve 20 on the rear side to move left and right along the guide bar 21, so that the collection box 15 is more stable when moving left and right. The limit block 22 plays a role in limiting the movement of the collection box 15, making it easy to move the collection box 15 directly above the sampling tube 8. The liquid in the collection box 15 can be transported to the waste liquid tank 23 through the connecting pipe 24.
[0036] Working principle: When using this sterile sampling device for liquid pipelines, first, place the sampling tube 8 on the placement tray 7. By rotating the fastening bolt 9, the limiting plate 10 is moved. The limiting plate 10 is used to firmly fix the sampling tube 8 on the placement tray 7. The displacement reference line on the fastening bolt 9 can help the operator judge whether the displacement of the left and right fastening bolts 9 is consistent, ensuring that the sampling tube 8 is located directly below the drain pipe 1. When installing the sealing plug 17, directly snap the elastic strips 18 on the left and right sides of the sealing plug 17 into the limiting frame 16 below the collection box 15.
[0037] Close the box door, rotate the threaded rod 5, and the placement plate 7 moves upward under the action of the smooth rod 6 and the threaded rod 5, moving the sampling tube 8 on the placement plate 7 to the lower end of the drain pipe 1. Open the control valve on the drain pipe 1, and the liquid in the drain pipe 1 flows into the sampling tube 8 to achieve sampling.
[0038] After sampling, move the placement tray 7 and sampling tube 8 downwards, away from the drain pipe 1. Then push the pull rod 11 into the sampling box 2. The pull rod 11 moves the collection box 15 to the left, positioning it directly above the sampling tube 8. Then rotate the positioning bolt 13 to connect it with the threaded groove 14, thus limiting the pull rod 11 and the collection box 15. When the collection box 15 is directly above the sampling tube 8, the remaining liquid in the drain pipe 1 can be collected simultaneously. Then, rotate the threaded rod 5, which drives the placement plate 7 and the sampling tube 8 to rotate and move upward, so that the sealing plug 17 below the collection box 15 is screwed into the mouth of the sampling tube 8, thereby sealing the sampling tube 8. Then, the threaded rod 5 drives the placement plate 7 and the sampling tube 8 to move downward, at which point the sealing plug 17 is disengaged from the collection box 15. Finally, open the door of the sampling box 2, loosen the fastening bolt 9, and take out the sampling tube 8. The liquid in the collection box 15 can be transported to the waste liquid tank 23 through the connecting pipe 24.
[0039] When disinfecting the inside of sampling box 2, turn on the ultraviolet disinfection lamp 3 to disinfect the inside of sampling box 2. Simultaneously, disinfectant solution can be used to disinfect the inside of sampling box 2 to ensure a sterile sampling environment, thus completing a series of procedures. Content not described in detail in this specification belongs to prior art known to those skilled in the art.
[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A sterile sampling device for liquid pipelines, comprising a drain pipe (1) and a sampling box (2), wherein the sampling box (2) is installed below the drain pipe (1), and a connecting frame (4) is installed below the sampling box (2), characterized in that: A threaded rod (5) is installed on the connecting frame (4), and a placement plate (7) is installed above the threaded rod (5) via a smooth rod (6). A sampling tube (8) is provided on the placement plate (7). A pull rod (11) runs through the right side of the sampling box (2), and a liquid collection box (15) is installed on the left side of the pull rod (11). Limiting frames (16) are installed on both the left and right sides of the lower surface of the liquid collection box (15), and a sealing plug (17) is provided below the limiting frame (16). Elastic strips (18) are installed on both the left and right sides of the sealing plug (17). A waste liquid tank (23) is installed on the right side of the sampling box (2), and the waste liquid tank (23) is connected to the collection box (15) through a connecting pipe (24).
2. The aseptic sampling device for liquid pipelines according to claim 1, characterized in that: The sampling box (2) is equipped with ultraviolet disinfection lamps (3) on both the left and right sides of its inner wall, and there are multiple ultraviolet disinfection lamps (3). A control valve is installed on the drain pipe (1).
3. The aseptic sampling device for liquid pipelines according to claim 1, characterized in that: The threaded rod (5) is threadedly connected to the connecting frame (4), the smooth rod (6) passes through the sampling box (2), a sealing gasket is provided at the connection position between the sampling box (2) and the smooth rod (6), and the smooth rod (6) is fixedly connected to the placement plate (7).
4. The aseptic sampling device for liquid pipelines according to claim 3, characterized in that: Fastening bolts (9) are installed on both the left and right sides of the placement plate (7), and a limiting plate (10) is installed on the opposite side of the fastening bolts (9). The limiting plate (10) has a circular structure design, and a displacement reference line is coated on the fastening bolts (9).
5. The aseptic sampling device for liquid pipelines according to claim 1, characterized in that: An anti-slip block (12) is installed on the right side of the pull rod (11), and a positioning bolt (13) is installed on the anti-slip block (12). A threaded groove (14) is opened on the right side of the sampling box (2). The positioning bolt (13) is threadedly connected to the threaded groove (14). A sealing gasket is provided at the connection position between the sampling box (2) and the pull rod (11).
6. The aseptic sampling device for liquid pipelines according to claim 1, characterized in that: The elastic strip (18) is engaged with the limiting frame (16) on the lower surface of the collection box (15). The inner diameter of the collection box (15) is larger than the inner diameter of the drain pipe (1). The sealing plug (17) is engaged with the opening of the sampling tube (8).
7. The aseptic sampling device for liquid pipelines according to claim 1, characterized in that: The sampling box (2) is equipped with a guide strip (21) inside. The guide strip (21) is located on the rear side of the liquid collection box (15). A movable sleeve (20) is installed on the rear side of the liquid collection box (15) through a connecting strip (19). The movable sleeve (20) is fitted onto the guide strip (21). The movable sleeve (20) and the guide strip (21) are slidably connected. A limit block (22) is installed on the guide strip (21). The connecting pipe (24) has an elastic and telescopic structure design.