Portable food microorganism rapid detection sampling device
By incorporating a water storage chamber and a limiting rod into the sampler, the problem of cross-contamination during sampler cleaning is solved, achieving convenient automatic cleaning and improving operational convenience during multiple sampling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN XIANZHIDA FOOD TESTING CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-05-29
AI Technical Summary
Existing food samplers are prone to cross-contamination or inconvenience during cleaning, especially when multiple samples are taken, requiring frequent changes of water for cleaning.
A portable food microbial rapid detection and sampling device was designed, which includes a water storage chamber, a drain outlet, a sealing block, and a limiting rod, etc. The limiting rod prevents the piston block from contacting the bottom of the sampler body, and automatically cleans the device with clean water in the water storage chamber after collection.
It enables rapid cleaning of the sampler's interior, avoids cross-contamination, simplifies the cleaning process, and improves ease of use.
Smart Images
Figure CN224299232U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of food sampling device technology, and in particular to a portable food microbial rapid detection and sampling device. Background Technology
[0002] To ensure food safety, national supervisory authorities or company quality control departments will conduct random sampling tests on food; existing liquid samplers are similar in structure to syringes.
[0003] A search of Chinese patent CN217717098U reveals a portable sampling and storage device for food testing. The device includes a syringe with an adjustment hole and an outlet hole at the lower end of its side wall. A conduit connects to the outlet hole, and a piston latch is located at the middle of the conduit. The outlet hole is connected to a sampling bottle. This patent works by inserting the syringe needle into the liquid food to be tested. After drawing a certain amount of liquid, rotating a valve drives a connecting rod. This rod rotation also causes a baffle to move parallel to the inside of the syringe needle, sealing the bottom of the syringe needle. Pressing down the syringe piston forces liquid out through the outlet hole, which then enters the conduit. The conduit guides the liquid into the sampling bottle for storage. Once the sampling bottle is full, it is removed, and the piston latch is used to seal the conduit, achieving the beneficial effect of repeated sample extraction.
[0004] Based on the above search results and existing technologies, the following findings were made:
[0005] Although the above-mentioned device can achieve the effect of repeatedly extracting samples, the syringe is usually cleaned by drawing water to clean its interior. However, the water is easily contaminated when drawing water. If multiple samplings are required, multiple cleanings are needed. If the same water from the same container is used, cross-contamination is likely to occur. Using different water for each cleaning is also troublesome and inconvenient. Utility Model Content
[0006] To address the aforementioned technical problems, this invention proposes a portable food microbial rapid detection and sampling device, which achieves the effect of quickly cleaning the sample residue inside the sampler body.
[0007] The technical solution to achieve the purpose of this utility model is: a portable food microbial rapid detection and sampling device, including a sampler body, a liquid sampling nozzle fixedly installed at the bottom of the sampler body, a piston block movably installed inside the sampler body, a pull rod fixedly installed on the piston block, a handle installed on the pull rod, a sample storage bottle movably installed on one side of the sampler body, and a cleaning mechanism provided on the sampler body.
[0008] Cleaning services include:
[0009] The water storage chamber, drain outlet, and sealing block 1 are provided. The water storage chamber is located inside the pull rod 1 near the bottom. The drain outlet is located on the piston block and passes through the upper and lower walls of the piston block and communicates with the interior of the water storage chamber. The sealing block 1 is movably installed inside the drain outlet.
[0010] Pull rod 2 and handle 2. Pull rod 2 is located inside the water storage chamber. The bottom of pull rod 2 is fixedly connected to sealing block 1. Pull rod 2 extends upward through the upper and lower walls of handle 1.
[0011] The return spring and the limiting rod are provided. The return spring is sleeved on a section of the side wall inside the water storage chamber of the pull rod 2, and the limiting rod is fixedly installed on the top of the sampler body.
[0012] In some embodiments, a water replenishment cavity is provided on the upper interior of the pull rod, and a sealing cover is movably installed on the outer wall of the pull rod corresponding to the position of the water replenishment cavity. A water replenishment groove is provided between the water replenishment cavity and the water storage cavity, and the water replenishment groove connects the sealing cover and the interior of the water storage cavity.
[0013] In some embodiments, the sampler body is made of transparent material, and the sampler body has scales. Multiple reinforcing ribs are fixedly installed on the side wall of the pull rod.
[0014] In some embodiments, a mounting base is installed on the side wall of the sampler body, the sample bottle is movably mounted on the mounting base, the liquid dispensing nozzle is made of a relatively soft silicone material, and a sealing mechanism is provided on the mounting base.
[0015] In some embodiments, the sealing mechanism includes a sampling port, a torsion spring shaft, a sealing plate, and a second sealing block. The sampling port is located on the side wall of the sampler body at a position corresponding to the mounting base, and the sampling port connects the sampler body and the interior of the sample storage bottle.
[0016] In some embodiments, the torsion spring shaft is movably mounted inside the upper part of the mounting base, the sealing plate is sleeved on the torsion spring shaft, the bottom of the sealing plate is inclined, and the sealing block two is fixedly mounted inside the mounting base at the position corresponding to the sealing plate.
[0017] Compared with existing technologies, the significant advantages of this invention are:
[0018] This invention utilizes a cleaning mechanism. Because a limiting rod is installed on the sampler body, when the piston block moves downwards inside the sampler body, the handle is limited by the limiting rod, preventing the bottom of the piston block from contacting the bottom wall of the sampler body. This ensures that when a sample is drawn through the sampler body, the sample will not come into contact with the piston block. After sample collection, pulling the handle causes the sealing block to move via the pull rod, disengaging it from the drain. At this point, clean water from the water storage chamber flows into the sampler body through the drain. Then, by pulling the handle and pull rod, the piston block moves inside the sampler body, achieving a rapid cleaning effect on any remaining sample inside the sampler body. Attached Figure Description
[0019] The present invention will be further explained below with reference to the accompanying drawings and embodiments:
[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention in one embodiment;
[0021] Figure 2 This is a cross-sectional view of the internal structure provided in one embodiment of the present invention;
[0022] Figure 3 This utility model provides in one embodiment Figure 2 Enlarged view of point A in the middle.
[0023] Explanation of reference numerals in the attached figures:
[0024] 1. Sampler body; 2. Liquid sampling nozzle; 3. Piston block; 4. Pull rod one; 5. Handle one; 6. Scale; 7. Sample storage bottle; 8. Water storage chamber; 9. Drain outlet; 10. Sealing block one; 11. Pull rod two; 12. Handle two; 13. Return spring; 14. Limiting rod; 15. Water replenishment chamber; 16. Sealing cover; 17. Water replenishment trough; 18. Reinforcing rib; 19. Mounting base; 20. Sampling port; 21. Torsion spring shaft; 22. Sealing plate; 23. Sealing block two. Detailed Implementation
[0025] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.
[0026] This utility model provides an improved portable rapid detection and sampling device for food microorganisms. The technical solution of this utility model is as follows:
[0027] like Figures 1 to 3 As shown, a portable food microbial rapid detection and sampling device includes a sampler body 1, which is a hollow cylindrical structure. A liquid-taking nozzle 2 is fixedly installed at the bottom of the sampler body 1. The liquid-taking nozzle 2 is a hollow frustum structure. A piston block 3 is movably installed inside the sampler body 1. A pull rod 4 is fixedly installed on the piston block 3. The pull rod 4 is a cylindrical structure. A handle 5 is installed on the pull rod 4. By pulling the pull rod 4 through the handle 5, the piston block 3 is moved inside the sampler body 1. Under the action of negative pressure, the liquid can be sampled through the liquid-taking nozzle 2. A sample storage bottle 7 is movably installed on one side of the sampler body 1. The collected sample can be stored inside the sample storage bottle 7. A cleaning mechanism is provided on the sampler body 1.
[0028] The cleaning mechanism includes a water storage chamber 8, a drain outlet 9, a sealing block 10, a pull rod 21, a handle 22, a return spring 13, and a limiting rod 14. The water storage chamber 8 is a cylindrical groove located inside the pull rod 14 near the bottom. The drain outlet 9 is a cylindrical groove located on the piston block 3, penetrating the upper and lower walls of the piston block 3 and communicating with the interior of the water storage chamber 8. The sealing block 10 is movably installed inside the drain outlet 9. The pull rod 21 is a cylindrical structure located inside the water storage chamber 8, with its bottom fixedly connected to the sealing block 10. The pull rod 21 extends upward through the upper and lower walls of the handle 15. The return spring 13 is sleeved on a section of the pull rod 21 located inside the water storage chamber 8. The limiting rod 14 is a cylindrical structure and is fixedly installed on the sampler body 1. At the top, through the setting of the cleaning mechanism, since the sampler body 1 is equipped with a limiting rod 14, when the piston block 3 moves downward inside the sampler body 1, the handle 5 will be limited by the limiting rod 14, so that the bottom of the piston block 3 cannot contact the bottom wall inside the sampler body 1. Thus, when the sample is extracted through the sampler body 1, the sample will not contact the piston block 3. After the sample is collected, pull the handle 12. The handle 12 drives the sealing block 10 to move through the pull rod 11. The sealing block 10 will leave the inside of the drain port 9. At this time, the clean water inside the water storage chamber 8 will flow into the inside of the sampler body 1 through the drain port 9. Then, by pulling the handle 5 and the pull rod 4, the piston block 3 moves inside the sampler body 1, thereby cleaning the sample remaining inside the sampler body 1.
[0029] The sampler body 1 is made of transparent material. The sampler body 1 has a scale 6. Multiple reinforcing ribs 18 are fixedly installed on the side wall of the pull rod 4. The reinforcing ribs 18 can improve the strength of the pull rod 4.
[0030] A water replenishment cavity 15 is provided on the upper part of the pull rod 4. The water replenishment cavity 15 is a cylindrical groove. A sealing cover 16 is movably installed on the outer wall of the pull rod 4 at the position corresponding to the water replenishment cavity 15. A water replenishment groove 17 is provided between the water replenishment cavity 15 and the water storage cavity 8. The water replenishment groove 17 is a cylindrical groove. The water replenishment groove 17 connects the sealing cover 16 and the interior of the water storage cavity 8. By removing the sealing cover 16, clean water can be injected into the interior of the water replenishment cavity 15, and then the clean water in the water storage cavity 8 can be replenished through the water replenishment groove 17.
[0031] A mounting base 19 is installed on the side wall of the sampler body 1. The sample bottle 7 is movably mounted on the mounting base 19. The sampling nozzle 2 is made of soft silicone material. A sealing mechanism is provided on the mounting base 19. The sealing mechanism includes a sampling port 20, a torsion spring shaft 21, a sealing plate 22, and a sealing block 23. The sampling port 20 is a rectangular groove. The sampling port 20 is located on the side wall of the sampler body 1 corresponding to the mounting base 19. The sampling port 20 connects the interior of the sampler body 1 and the interior of the sample bottle 7. The torsion spring shaft 21 is a cylindrical structure. The torsion spring shaft 21 is movably mounted inside the upper part of the mounting base 19. The sealing plate 22 is a rectangular plate. The sealing plate 22 is fitted onto the torsion spring shaft 21. The bottom of the sealing plate 22 is inclined, and the sealing block 23 is a triangular block. The sealing block 23 is fixedly installed inside the mounting base 19 at the position corresponding to the sealing plate 22. Through the setting of the sealing mechanism, when the sampler body 1 extracts the sample, the sample will remain inside the sampler body 1. Then, the liquid nozzle 2 can be pinched, and the liquid nozzle 2 will be sealed. Then, the piston block 3 can be pushed, and the piston block 3 pressurizes the sample inside the sampler body 1. At this time, the sealing plate 22 will flip, and the sample inside the sampler body 1 will move into the sample storage bottle 7 through the sampling port 20, thereby achieving the effect of quickly storing the sample.
[0032] The specific working method is as follows:
[0033] With the cleaning mechanism in place, the limit rod 14 is installed on the sampler body 1. When the piston block 3 moves downward inside the sampler body 1, the handle 5 will be limited by the limit rod 14, preventing the bottom of the piston block 3 from contacting the bottom wall of the sampler body 1. This ensures that the sample will not contact the piston block 3 when the sample is drawn through the sampler body 1. After the sample is collected, the handle 12 is pulled, and the handle 12 moves the sealing block 10 through the pull rod 11. The sealing block 10 will then leave the drain port 9. At this time, the clean water in the water storage chamber 8 will flow into the sampler body 1 through the drain port 9. Then, by pulling the handle 5 and the pull rod 4, the piston block 3 moves inside the sampler body 1, thereby cleaning the sample remaining inside the sampler body 1.
[0034] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.
Claims
1. A portable food microbial rapid detection and sampling device, comprising a sampler body (1), wherein a liquid sampling nozzle (2) is fixedly installed at the bottom of the sampler body (1), characterized in that: A piston block (3) is movably installed inside the sampler body (1), a pull rod (4) is fixedly installed on the piston block (3), a handle (5) is installed on the pull rod (4), a sample storage bottle (7) is movably installed on one side of the sampler body (1), and a cleaning mechanism is provided on the sampler body (1). Cleaning services include: The water storage chamber (8), the drain outlet (9), and the sealing block (10) are located inside the pull rod (4) near the bottom. The drain outlet (9) is located on the piston block (3). The drain outlet (9) passes through the upper and lower walls of the piston block (3) and communicates with the interior of the water storage chamber (8). The sealing block (10) is movably installed inside the drain outlet (9). Pull rod 2 (11) and handle 2 (12). Pull rod 2 (11) is set inside the water storage cavity (8). The bottom of pull rod 2 (11) is fixedly connected to sealing block 1 (10). Pull rod 2 (11) extends upward through the upper and lower walls of handle 1 (5). The reset spring (13) and the limiting rod (14) are fitted on a section of the side wall of the pull rod (11) inside the water storage chamber (8), and the limiting rod (14) is fixedly installed on the top of the sampler body (1).
2. The portable food microbial rapid detection and sampling device according to claim 1, characterized in that: A water replenishment cavity (15) is provided on the upper part of the inner side of the pull rod (4). A sealing cover (16) is installed on the outer side wall of the pull rod (4) at the position corresponding to the water replenishment cavity (15). A water replenishment groove (17) is provided between the water replenishment cavity (15) and the water storage cavity (8). The water replenishment groove (17) connects the sealing cover (16) and the interior of the water storage cavity (8).
3. The portable food microbial rapid detection and sampling device according to claim 1, characterized in that: The sampler body (1) is made of transparent material. The sampler body (1) has a scale (6) and multiple reinforcing ribs (18) are fixedly installed on the side wall of the pull rod (4).
4. The portable food microbial rapid detection and sampling device according to claim 1, characterized in that: The sampler body (1) is equipped with a mounting base (19) on its side wall. The sample bottle (7) is movably mounted on the mounting base (19). The liquid dispensing nozzle (2) is made of a relatively soft silicone material. The mounting base (19) is equipped with a sealing mechanism.
5. The portable food microbial rapid detection and sampling device according to claim 4, characterized in that: The sealing mechanism includes a sampling port (20), a torsion spring shaft (21), a sealing plate (22), and a sealing block (23). The sampling port (20) is located on the side wall of the sampler body (1) at the position corresponding to the mounting base (19). The sampling port (20) connects the sampler body (1) and the interior of the sample storage bottle (7).
6. The portable food microbial rapid detection and sampling device according to claim 5, characterized in that: The torsion spring shaft (21) is movably installed inside the mounting base (19) and above it. The sealing plate (22) is sleeved on the torsion spring shaft (21). The bottom of the sealing plate (22) is inclined. The sealing block 2 (23) is fixedly installed inside the mounting base (19) at the position corresponding to the sealing plate (22).