CN111397966A - Liquid food detects uses portable sampling device - Google Patents
Liquid food detects uses portable sampling device Download PDFInfo
- Publication number
- CN111397966A CN111397966A CN202010250661.5A CN202010250661A CN111397966A CN 111397966 A CN111397966 A CN 111397966A CN 202010250661 A CN202010250661 A CN 202010250661A CN 111397966 A CN111397966 A CN 111397966A
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- sampling
- hollow cylinder
- liquid
- shaft
- piston
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
- G01N2001/1427—Positive displacement, piston, peristaltic
Abstract
The invention discloses a portable sampling device for liquid food detection, which comprises a sampler and a sample storage seat, wherein the sampler comprises a sampling tube and a sampling tube; the sampler comprises a sampling hollow cylinder and a sampling needle head arranged at the front part of the sampling hollow cylinder; a mixing hollow cylinder capable of sliding back and forth in the sampling hollow cylinder is arranged in the sampling hollow cylinder, a piston top plate is arranged at the front end of the mixing hollow cylinder, and circulation holes are annularly and uniformly arranged on the piston top plate at intervals; a piston pipe shaft is arranged in the sampling hollow cylinder along the axis direction; a rotating plate is arranged at the front end of the piston pipe shaft behind a piston top plate in the mixing hollow cylinder, and a through hole matched with the circulating hole is formed in the rotating plate; the other end of the mixing cylinder is provided with a liquid separation plate, and the center of the liquid separation plate is provided with a liquid through hole; the invention can realize the rapid and accurate sampling of liquid food, and the heating stirring and aqueous solution mixing operation are carried out on viscous or partially crystallized samples, the whole process is efficient and safe, and the device has compact structure and is convenient to carry.
Description
Technical Field
The invention belongs to the technical field of food quality detection, and particularly relates to a portable sampling device for liquid food detection.
Background
In food safety inspection work, often need to carry out the sample operation to liquid food such as products such as edible oil or beverage, traditional sampling device is sample spoon or cup liquid sampler generally, and their drawback lies in: only a sample on the surface of the liquid can be obtained by sampling with the sampling spoon, and the representativeness of the sample is not high; sampling cup need carry out a lot of samplings when the sample simultaneously, and sampling volume can't be accurate and once put in place to when the sample is in thick form and even when appearing the crystallization granule, above-mentioned sampling device can't carry out further homogenization treatment to the sample, consequently leads to the sampling process loaded down with trivial details, and operating time is long, and the sample of collection also can't satisfy the required standard of sampling detection.
Disclosure of Invention
The invention aims to solve the problems, provides a portable sampling device for liquid food detection, can realize rapid and accurate sampling of liquid food, and carries out heating stirring and aqueous solution mixing operation on a viscous or partially crystallized sample, and has the advantages of high efficiency and safety in the whole process, compact structure and portability.
In order to realize the purpose, the invention adopts the technical scheme that: a portable sampling device for liquid food detection comprises a sampler and a sample storage seat; the sampler comprises a sampling hollow cylinder and a sampling needle head arranged at the front part of the sampling hollow cylinder; a mixing hollow cylinder capable of sliding back and forth in the sampling hollow cylinder is arranged in the sampling hollow cylinder, a piston top plate is arranged at the front end of the mixing hollow cylinder, and circulation holes are uniformly arranged on the piston top plate at intervals in an annular manner; a piston pipe shaft is arranged in the sampling hollow cylinder along the axis direction; a rotating plate is arranged at the front end of the piston pipe shaft behind a piston top plate in the mixing hollow cylinder, and a through hole matched with the circulating hole is formed in the rotating plate; the other end of the mixing hollow cylinder is provided with a liquid isolating plate, and the center of the liquid isolating plate is provided with a liquid through hole; the other end of the piston pipe shaft penetrates through the liquid through hole, and a piston pipe handle is arranged at the tail part of the piston pipe shaft outside the sampling hollow cylinder; and a hinge structure which can concentrically and relatively rotate and move is arranged between the rotary plate and the piston top plate.
Furthermore, the sample storage seat comprises a temperature control chamber which is concave and used for storing the sampling hollow cylinder, and two ends of the temperature control chamber are provided with bearing seats used for bearing the sampling needle head and the piston tubular shaft; one side of the bearing seat is provided with a taking port for taking the piston pipe handle.
Furthermore, the temperature control chamber is connected with a control panel, and the control panel is a single chip microcomputer control element for adjusting the power of a heating device in the temperature control chamber.
Furthermore, the piston pipe shaft is hollow and is provided with a circulating valve shaft capable of sliding back and forth, a pipe shaft valve port for penetrating through the front space and the rear space of the liquid isolating plate is arranged at a through liquid hole of the piston pipe shaft, and a valve port groove matched with the pipe shaft valve port is arranged at the front end of the circulating valve shaft; the tail of the sampling hollow cylinder is provided with an airtight closing cover, and the airtight closing cover is provided with a water inlet.
Furthermore, a sliding groove is formed in the circulation valve shaft along the radial direction of the circular section, a sliding valve block matched with the valve port of the tubular shaft and a limiting strip used for limiting the sliding valve block are arranged in the sliding groove, and a pressure spring is arranged between one side of the sliding valve block and the circulation valve shaft; when the flow valve shaft does not work, the sliding valve block is positioned at the valve port of the pipe shaft and is closed with the liquid through hole.
Further, a valve shaft handle is arranged at the tail end of the flow valve shaft; and a fillet is arranged at the edge where the front end of the sliding valve block is connected with the valve port of the tubular shaft.
Further, the airtight closing cover is movably connected with the tail part of the sampling hollow cylinder through threaded connection; the water inlet is provided with a hose for taking liquid.
Furthermore, a heat-insulating vacuum layer is arranged outside the sampling vacuum cylinder, and the heat-insulating vacuum layer is a dark light-isolating layer; and an observation window is arranged on the heat-preservation vacuum layer.
The invention has the beneficial effects that:
1. the sampling device can accurately sample the center of the liquid food, meanwhile, the sampling device is internally sealed, the rotary plate can be driven by rotating the tubular shaft of the piston to open the front end of the mixing hollow cylinder, the collected sample is driven by air pressure to be stirred and mixed through the through hole and the through hole, the sample does not need to be exposed in the air for sampling operation, and the quality of the sample is more representative.
2. According to the invention, the arrangement of the circulation valve shaft and the valve port of the tubular shaft can realize controllable opening and closing of the liquid through hole at the rear end of the mixing hollow cylinder, when a sample needs to be subjected to quantitative aqueous solution mixing and dilution, the valve shaft handle is operated to be pulled outwards to drive the valve shaft groove on the circulation valve shaft to move forwards and only to be located at the valve port of the tubular shaft, so that the two sides of the liquid through hole are communicated, the aqueous solution is contacted and mixed with the sample, the whole process is also completed in the closed space of the sampling hollow cylinder, other devices or processes are not needed, and the device.
3. The invention also adds a resettable sliding valve block on the circulating valve shaft to further ensure the sealing performance when the liquid through hole does not circulate, and the pressure spring can ensure that the sliding valve block is automatically pushed and pressed forwards when the sliding valve block is positioned at the valve port of the tubular shaft, so as to ensure that the gap between the valve port of the tubular shaft and the edge of the liquid through hole is filled, thereby further improving the air tightness controllability in the mixing hollow cylinder.
4. The device is also provided with a sample storage seat, and the temperature control chamber can realize heating or heat preservation treatment on the sample, avoid the phenomena of solidification and the like after the sample is collected, and also can help the liquid sample to be heated and accelerated in the stirring and mixing process; and the sampling operation with higher convenience and higher efficiency is realized by matching with the control panel and the taking port.
5. According to the invention, the airtight closing cover is arranged, controllable airtight closing operation can be carried out on the rear space of the sampling hollow cylinder, and when the sampling hollow cylinder needs to expand the front space to improve air pressure, the airtight closing cover can be loosened to avoid air pressure conflict of the rear space; meanwhile, when quantitative water needs to be added at the rear part and the mixture is sealed and dissolved, the airtight closing cover can be screwed to finish the operation.
Drawings
Fig. 1 is a schematic perspective view of the device of the present invention.
FIG. 2 is a schematic front view of the apparatus of the present invention.
Fig. 3 is a schematic cross-sectional view a-a of fig. 2.
Fig. 4 is a schematic cross-sectional view of B-B in fig. 2.
Fig. 5 is an enlarged structural view of a portion C in fig. 3.
Fig. 6 is an enlarged schematic view of a portion D in fig. 4.
Fig. 7 is a schematic half-sectional view of the three-dimensional structure of the sampler of the present invention.
Fig. 8 is an enlarged structural view of a portion E in fig. 7.
In the figure: 1. a sampler; 2. a sample storage seat; 3. sampling the empty cylinder; 4. a sampling needle; 5. a thermal insulation vacuum layer; 6. mixing the empty cylinders; 7. a piston top plate; 8. a flow-through hole; 9. rotating the plate; 10. a through hole; 11. a piston tube shaft; 12. a piston tube handle; 13. a flow-through valve shaft; 14. a valve port groove; 15. sliding the valve block; 16. a chute; 17. a limiting strip; 18. round corners; 19. a pressure spring; 20. a valve stem; 21. a hermetically closed lid; 22. an observation window; 23. a scale bar; 24. a water inlet; 25. a water hose; 26. a liquid barrier; 27. a liquid through hole; 28. a hinge structure; 29. a temperature control chamber; 30. a bearing seat; 31. a control panel; 32. taking a port; 33. the valve port of the tubular shaft.
Detailed Description
The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.
As shown in fig. 1 to 8, the specific structure of the present invention is: a portable sampling device for liquid food detection comprises a sampler 1 and a sample storage seat 2; the sampler 1 comprises a sampling hollow cylinder 3 and a sampling needle 4 arranged at the front part of the sampling hollow cylinder 3; a mixing hollow cylinder 6 capable of sliding back and forth in the sampling hollow cylinder 3 is arranged in the sampling hollow cylinder 3, a piston top plate 7 is arranged at the front end of the mixing hollow cylinder 6, and circulation holes 8 are annularly and uniformly arranged on the piston top plate 7 at intervals; a piston pipe shaft 11 is arranged in the sampling hollow cylinder 3 along the axis direction; a rotary plate 9 is arranged at the front end of the piston pipe shaft 11 behind the piston top plate 7 in the mixing hollow cylinder 6, and a through hole 10 matched with the through hole 8 is formed in the rotary plate 9; the other end of the mixing hollow cylinder 6 is provided with a liquid isolating plate 26, and the center of the liquid isolating plate 26 is provided with a liquid through hole 27; the other end of the piston pipe shaft 11 passes through the liquid through hole 26, and the tail part of the piston pipe shaft is provided with a piston pipe handle 12 outside the sampling hollow cylinder 3; a hinge structure 28 for concentric relative rotation movement is arranged between the rotary plate 9 and the piston top plate 7.
In order to further improve the storage condition and the taking convenience of the sample, the sample storage seat 2 comprises a temperature control chamber 29 which is concave and used for storing the sampling hollow cylinder 3, and two ends of the temperature control chamber 29 are provided with bearing seats 30 used for bearing the sampling needle 4 and the piston tubular shaft 11; the taking port 32 for taking the piston tube handle 12 is arranged on one side of the bearing seat 30.
Preferably, the temperature control chamber 29 is connected to a control panel 31, and the control panel 31 is a single chip control element for adjusting the power of the heating device inside the temperature control chamber 29.
In order to further realize accurate and efficient sample dilution and mixing of the aqueous solution, the piston pipe shaft 11 is hollow and is provided with a circulating valve shaft 13 capable of sliding back and forth, the piston pipe shaft 11 is provided with a pipe shaft valve port 33 for penetrating through the front space and the rear space of the liquid separation plate 26 at the liquid through hole 27, and the front end of the circulating valve shaft 13 is provided with a valve port groove 14 matched with the pipe shaft valve port 33; the tail part of the sampling hollow cylinder 3 is provided with an airtight closing cover 21, and the airtight closing cover 21 is provided with a water inlet 24.
In order to improve the air tightness inside the device, a sliding groove 16 is formed in the flow valve shaft 13 and is outward along the radial direction of the circular section, a sliding valve block 15 matched with the valve port 33 of the tubular shaft and a limiting strip 17 used for limiting the sliding valve block 15 are arranged in the sliding groove 16, and a pressure spring 19 is arranged between one side of the sliding valve block 15 and the flow valve shaft 13; when the flow valve shaft 13 is not in operation, the sliding valve block 13 is positioned at the pipe shaft valve port 33 and is closed with the liquid through hole 27.
In order to facilitate the operation of the forward and backward movement of the flow valve shaft, the sliding valve block can extend and retract more smoothly, and the tail end of the flow valve shaft 13 is provided with a valve shaft handle 20; the front end of the sliding valve block 15 is provided with a round angle 18 at the connecting edge with the pipe shaft valve port 33.
In order to facilitate the loading and unloading operation of the airtight closing cover and simultaneously efficiently take water, the airtight closing cover 21 is movably connected with the tail part of the sampling hollow cylinder 3 through threaded connection; the water inlet 24 is provided with a hose 25 for taking liquid.
In order to avoid the situation that the sample is deteriorated or decomposed due to environmental changes such as light receiving or temperature changing, a heat-insulating vacuum layer 5 is arranged outside the sampling vacuum cylinder 3, and the heat-insulating vacuum layer 5 is a dark light-isolating layer; an observation window 22 is arranged on the heat preservation vacuum layer 5.
When the device works, firstly, the airtight closing cover is opened, the piston pipe shaft is rotated until the through hole on the rotary plate and the through hole on the piston top plate are not coincident completely, and the sampling needle is inserted into the liquid food to operate the piston pipe shaft to pull outwards to extract a sample; after the sample is extracted to the front space of the mixing hollow cylinder in the sampling hollow cylinder, the sampling needle head is closed, the piston pipe shaft is rotated until the through hole on the rotary plate is partially or completely coincided with the through hole on the piston top plate, the piston pipe shaft is pushed and pulled to drive the mixing hollow cylinder to move back and forth, the sample is forced to repeatedly enter and exit the mixing hollow cylinder through the through hole, and then the operation is repeated for a plurality of times until the sample is completely stirred and mixed.
When the sample needs aqueous solution to dilute and dissolve, the airtight closing cover can be closed, and quantitative aqueous solution is extracted through the water inlet and the hose and enters the rear space of the mixing hollow cylinder in the sampling hollow cylinder for standby, then the valve shaft handle is operated to pull outwards, the valve shaft groove on the circulating valve shaft is driven to move forwards only at the valve port of the pipe shaft, the two side spaces of the liquid through hole are communicated, and the aqueous solution is contacted with the sample and mixed.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (8)
1. A portable sampling device for liquid food detection comprises a sampler (1) and a sample storage seat (2); the sampler (1) is characterized by comprising a sampling hollow cylinder (3) and a sampling needle head (4) arranged at the front part of the sampling hollow cylinder (3); a mixing hollow cylinder (6) capable of sliding back and forth in the sampling hollow cylinder (3) is arranged in the sampling hollow cylinder (3), a piston top plate (7) is arranged at the front end of the mixing hollow cylinder (6), and circulation holes (8) are uniformly arranged on the piston top plate (7) at intervals in an annular manner; a piston pipe shaft (11) is arranged in the sampling hollow cylinder (3) along the axis direction; a rotating plate (9) is arranged at the front end of the piston pipe shaft (11) behind a piston top plate (7) in the mixing hollow cylinder (6), and a through hole (10) matched with the circulating hole (8) is formed in the rotating plate (9); the other end of the mixing hollow cylinder (6) is provided with a liquid isolating plate (26), and the center of the liquid isolating plate (26) is provided with a liquid through hole (27); the other end of the piston pipe shaft (11) penetrates through the liquid through hole (26) and the tail of the piston pipe shaft is provided with a piston pipe handle (12) outside the sampling hollow cylinder (3); a hinge structure (28) which can concentrically and relatively rotate and move is arranged between the rotary plate (9) and the piston top plate (7).
2. The portable sampling device for liquid food detection according to claim 1, wherein the sample storage seat (2) comprises a temperature control room (29) recessed for storing the sampling hollow cylinder (3), and two ends of the temperature control room (29) are provided with a bearing seat (30) for bearing the sampling needle (4) and the piston pipe shaft (11); one side of the bearing seat (30) is provided with a taking port (32) for taking the piston pipe handle (12).
3. The portable sampling device for liquid food detection as recited in claim 2, wherein the temperature control chamber (29) is connected to a control panel (31), and the control panel (31) is a single chip microcomputer control element for adjusting the power of the heating device inside the temperature control chamber (29).
4. The portable sampling device for liquid food detection according to claim 1, wherein the piston pipe shaft (11) is hollow and is provided with a flow valve shaft (13) capable of sliding back and forth, the piston pipe shaft (11) is provided with a pipe shaft valve port (33) at the position of the liquid through hole (27) for penetrating through the front and back spaces of the liquid separation plate (26), and the front end of the flow valve shaft (13) is provided with a valve port groove (14) matched with the pipe shaft valve port (33); the tail of the sampling hollow cylinder (3) is provided with an airtight closing cover (21), and a water inlet (24) is formed in the airtight closing cover (21).
5. The portable sampling device for liquid food detection according to claim 4, wherein a chute (16) is formed in the circulation valve shaft (13) and extends radially outwards along the circular cross section, a sliding valve block (15) matched with the pipe shaft valve port (33) and a limiting strip (17) for limiting the sliding valve block (15) are arranged in the chute (16), and a pressure spring (19) is arranged between one side of the sliding valve block (15) and the circulation valve shaft (13); when the flow valve shaft (13) is not in operation, the sliding valve block (13) is positioned at the valve port (33) of the pipe shaft and is closed with the liquid through hole (27).
6. The portable sampling device for liquid food detection according to claim 4, characterized in that the tail end of the flow valve shaft (13) is provided with a valve shaft handle (20); the front end of the sliding valve block (15) is connected with the valve port (33) of the tubular shaft, and the edge is provided with a fillet (18).
7. The portable sampling device for liquid food detection according to claim 4, characterized in that the airtight closing cover (21) is movably connected with the tail part of the sampling hollow cylinder (3) through a threaded connection; the water inlet (24) is provided with a hose (25) for taking liquid.
8. The portable sampling device for liquid food detection according to claim 1, wherein the sampling vacuum cylinder (3) is externally provided with a thermal insulation vacuum layer (5), and the thermal insulation vacuum layer (5) is a dark light-shielding layer; and an observation window (22) is arranged on the heat-preservation vacuum layer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010250661.5A CN111397966B (en) | 2020-04-01 | 2020-04-01 | Liquid food detects uses portable sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010250661.5A CN111397966B (en) | 2020-04-01 | 2020-04-01 | Liquid food detects uses portable sampling device |
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| CN111397966A true CN111397966A (en) | 2020-07-10 |
| CN111397966B CN111397966B (en) | 2022-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010250661.5A Active CN111397966B (en) | 2020-04-01 | 2020-04-01 | Liquid food detects uses portable sampling device |
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| CN (1) | CN111397966B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117645923A (en) * | 2024-01-29 | 2024-03-05 | 昆明建新园食品销售有限公司 | Virus and bacteria detection device and detection method for meat products |
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| CN209033378U (en) * | 2017-11-30 | 2019-06-28 | 华中科技大学同济医学院附属协和医院 | Equal control injection speed and injection volume from mixing auger rate controlling syringe |
| CN209707169U (en) * | 2018-11-19 | 2019-11-29 | 镇江市丹徒区江南玻璃仪器厂 | It is a kind of for manufacturing the sampler of glass |
| CN209943631U (en) * | 2019-04-26 | 2020-01-14 | 浙江新冶特种阀门有限公司 | Inner balance type oxygen stop valve |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH078555A (en) * | 1993-06-25 | 1995-01-13 | Nissho Corp | Solution filling injector for mixing two-component |
| FR2714833A1 (en) * | 1994-01-10 | 1995-07-13 | Caffiniere De Jean Yves | Syringe with built-in mixing chamber |
| CN1270842A (en) * | 1999-04-15 | 2000-10-25 | 费布尔南多·奥拉西奥·马克·克莱 | Disposable syringe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117645923A (en) * | 2024-01-29 | 2024-03-05 | 昆明建新园食品销售有限公司 | Virus and bacteria detection device and detection method for meat products |
| CN117645923B (en) * | 2024-01-29 | 2024-03-26 | 昆明建新园食品销售有限公司 | Virus and bacteria detection device and detection method for meat products |
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| CN111397966B (en) | 2022-08-23 |
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Address after: 410300 Liuyang Industrial Park, Changsha City, Hunan Province Applicant after: Hunan Dingyu inspection and Testing Co.,Ltd. Address before: 410000 two type industrial park of Liuyang City, Changsha City, Hunan Province Applicant before: HUNAN DINGYU INSPECTION AND TESTING Co.,Ltd. |
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