CN116086886A - Layered sampling device for food quality detection - Google Patents
Layered sampling device for food quality detection Download PDFInfo
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- CN116086886A CN116086886A CN202211617012.XA CN202211617012A CN116086886A CN 116086886 A CN116086886 A CN 116086886A CN 202211617012 A CN202211617012 A CN 202211617012A CN 116086886 A CN116086886 A CN 116086886A
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- 238000005070 sampling Methods 0.000 title claims abstract description 103
- 235000013305 food Nutrition 0.000 title claims abstract description 39
- 238000001514 detection method Methods 0.000 title claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 95
- 238000002156 mixing Methods 0.000 claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 12
- 230000001954 sterilising effect Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 3
- 239000011248 coating agent Substances 0.000 claims 1
- 230000002940 repellent Effects 0.000 claims 1
- 239000005871 repellent Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 239000013049 sediment Substances 0.000 abstract description 9
- 238000000605 extraction Methods 0.000 abstract description 8
- 230000001360 synchronised effect Effects 0.000 abstract description 6
- 235000021056 liquid food Nutrition 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000007790 scraping Methods 0.000 description 6
- 239000000284 extract Substances 0.000 description 4
- 230000036541 health Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 235000021055 solid food Nutrition 0.000 description 1
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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
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/18—Devices for withdrawing samples in the liquid or fluent state with provision for splitting samples into portions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- General Health & Medical Sciences (AREA)
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- Pathology (AREA)
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Abstract
The invention belongs to the technical field of food detection devices, and particularly relates to a layered sampling device for food quality detection, which comprises a liquid storage tank, wherein the top of the liquid storage tank is penetrated and connected with a sampling tube in a sliding manner, the upper surface of the sampling tube is fixedly connected with a rotary motor, the output end of the rotary motor is fixedly connected with a first bevel gear, the inner bottom surface of the sampling tube is rotatably connected with a worm, the upper end of the worm penetrates through the top of the sampling tube and is fixedly connected with a second bevel gear, the second bevel gear is meshed with the first bevel gear, a plurality of transmission mechanisms are arranged on the worm, and a plurality of sampling mechanisms are arranged in the sampling tube. The invention can realize multi-layer synchronous extraction of food liquid, avoid errors in precision in the multi-layer extraction process, ensure the accuracy of detection data, improve the efficiency of layered sampling, simultaneously ensure more sufficient and uniform mixing of multi-layer sampling liquid, improve the sampling rate of easy sediment and facilitate subsequent detection.
Description
Technical Field
The invention belongs to the technical field of food detection devices, and particularly relates to a layered sampling device for food quality detection.
Background
Food detection is a detection technology for researching and evaluating food, and relates to various subjects such as biology and chemistry in the food field, in the whole food detection process, food sampling is also a vital link, the quality of sampling determines whether final detection data are accurate, sampling of solid food generally adopts a method of randomly sampling different parts, and liquid food adopts layered sampling, so that the sample representativeness can be ensured through the scientific sampling methods.
However, the existing stratified sampling devices for food quality detection often have the following problems when in use:
in the prior art, a layered sampling method is generally used for sampling liquid food, namely, a sampler is used for sampling target liquid for multiple times, but the method is not only easy to cause errors in precision and reduce the accuracy of detection data, but also has lower sampling efficiency because multi-layer sampling cannot be synchronously performed;
the semi-solid liquid is realized in a mode of layering and then uniformly mixing when layering sampling is performed, the prior art cannot support a layered sampling and mixing device, the semi-solid liquid sampling method is complex in operation, the semi-solid liquid is required to be extracted and then uniformly mixed, the manual operation steps are more, and better uniform mixing time can be missed;
the high-density easily-deposited component substances exist in part of the food liquid, so that certain difficulty is brought to food detection and sampling, and follow-up detection work is not facilitated.
Disclosure of Invention
The invention aims to solve the problems that multilayer synchronous sampling cannot be performed, semi-solid liquid sampling operation is complicated and partial liquid sediment is difficult to sample in the background art, and provides a layered sampling device for food quality detection, which supports multilayer synchronous sampling, uniformly mixes semi-solid liquid and effectively samples sediment.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a layering sampling device for food quality detection, includes the liquid reserve tank, the liquid reserve tank top runs through sliding connection has a sampling tube, sampling tube upper surface fixedly connected with rotates the motor, rotate motor output fixedly connected with first bevel gear, the rotation of sampling tube inner bottom surface is connected with the worm, the upper end of worm runs through sampling tube top and fixedly connected with second bevel gear, second bevel gear and first bevel gear intermesh, be provided with a plurality of drive mechanism on the worm, be provided with a plurality of sampling mechanism in the sampling tube;
the sampling mechanism comprises a piston cylinder, a piston rod, a liquid inlet, a suction nozzle, a liquid outlet and a connecting pipe, wherein the piston cylinder is fixedly connected to the side wall of the sampling cylinder in a penetrating manner, the piston cylinder is internally connected with the piston in a sealing sliding manner, the piston rod is fixedly connected to the piston, the suction nozzle is communicated with the inside of the piston cylinder through the liquid inlet, and the connecting pipe is communicated to the circumferential side wall of the piston cylinder through the liquid outlet;
the inner bottom surface of the sampling tube is fixedly connected with a sample mixing tank, each connecting pipe penetrates through the side wall of the sample mixing tank and is communicated with the interior of the sample mixing tank, and a mixing mechanism is arranged in the sample mixing tank.
Further, the transmission mechanism comprises a screw rod, a worm wheel and a nut, the screw rod is rotationally connected to the inner side wall of the sampling tube, the worm wheel is fixedly connected to the screw rod, the worm wheel is meshed with the worm, the nut is in threaded connection with the screw rod, and the nut is fixedly connected with the end part of the piston rod through a bracket.
Further, the mixing mechanism comprises a first gear, a rotating shaft, a second gear and stirring blades, wherein the first gear is fixedly connected to the lower end of the worm, the rotating shaft is rotatably connected to the inner bottom surface of the mixing tank, the upper end of the rotating shaft penetrates through the top of the mixing tank and is fixedly connected with the second gear, the second gear is meshed with the first gear, and a plurality of stirring blades are fixedly connected to the rotating shaft.
Further, the box body is fixedly connected with at the liquid reserve tank top, the through-hole has all been seted up to the top and the bottom of box body, bottom surface fixedly connected with sterilamp in the box body, sterilamp is annular structure setting.
Further, the bottom of the sampling tube is fixedly connected with a threaded rod, the inner bottom surface of the liquid storage tank is rotationally connected with a threaded sleeve, and a scraping plate is arranged on the outer side wall of the threaded sleeve.
Further, the surfaces of the threaded rod and the threaded sleeve are provided with waterproof and oil-proof coatings.
Further, a one-way valve is arranged at the liquid inlet, and an electromagnetic valve is arranged at the liquid outlet.
Further, an observation window is formed in the upper end of the side wall of the liquid storage tank, transparent glass is arranged at the observation window, and a feed inlet is formed in the side wall of the liquid storage tank.
Further, sampling tube upper end fixedly connected with support frame, support frame below fixedly connected with two electric telescopic handle.
Compared with the prior art, the layered sampling device for food quality detection has the advantages that:
1. according to the invention, by arranging the sampling mechanisms and through linkage cooperation of the worm and the sampling mechanisms, multilayer synchronous extraction of food liquid is realized, errors in precision in the multilayer extraction process are avoided, thereby ensuring the accuracy of detection data and improving the layered sampling efficiency.
2. According to the invention, the mixing mechanism is arranged, the extracted sampling liquid is injected into the mixing tank through the connecting pipe, and the mixing liquid is stirred through the stirring blade, so that the multi-layer sampling liquid is mixed more fully and uniformly, the time consumed by manual operation and steps is reduced, and the liquid mixing of each layer can be at a better time.
3. According to the invention, the scraping plate is arranged, and the threaded sleeve is utilized to drive the scraping plate to rotate, so that sediment at the bottom of the liquid storage tank is scraped and floats in liquid again, the sampling rate of the sediment is improved, and the follow-up food health detection is facilitated.
Drawings
FIG. 1 is a schematic diagram showing the analysis of the front view of a layered sampling device for food quality inspection according to the present invention;
FIG. 2 is an enlarged view at A of FIG. 1;
FIG. 3 is an enlarged view at B of FIG. 1;
fig. 4 is an enlarged view at C of fig. 1.
In the figure, 1 a liquid storage tank; 2, a sampling tube; 3, a rotary motor; 4 a first bevel gear; a 5 worm; 6, a second bevel gear; 7 transmission mechanism, 71 screw rod, 72 worm wheel, 73 nut; 8 sampling mechanism, 81 piston cylinder, 82 piston, 83 piston rod, 84 liquid inlet, 85 suction nozzle, 86 liquid outlet, 87 connecting pipe; 9, a sample mixing tank; 10 a mixing mechanism, 101 a first gear, 102 a rotating shaft, 103 a second gear and 104 stirring blades; 11 boxes; 12 through holes; 13 ultraviolet sterilizing lamp; 14, a threaded rod; 15 threaded sleeve; a 16 scraping plate; 17 a viewing window; 18 feed inlet; 19 a support frame; 20 electric telescopic rod.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.
As shown in figures 1-3, a layered sampling device for food quality detection comprises a liquid storage tank 1, wherein the top of the liquid storage tank 1 is fixedly connected with a box body 11, the top and the bottom of the box body 11 are both provided with through holes 12, the inner bottom surface of the box body 11 is fixedly connected with an ultraviolet sterilization lamp 13, the ultraviolet sterilization lamp 13 is in an annular structure, the upper end of the side wall of the liquid storage tank 1 is provided with an observation window 17, transparent glass is arranged at the observation window 17, the side wall of the liquid storage tank 1 is provided with a feed inlet 18, the top of the liquid storage tank 1 penetrates through a sampling tube 2 in a sliding manner, the upper end of the sampling tube 2 is fixedly connected with a supporting frame 19, two electric telescopic rods 20 are fixedly connected below the supporting frame 19, the upper surface of the sampling tube 2 is fixedly connected with a rotary motor 3, the output end of the rotary motor 3 is fixedly connected with a first bevel gear 4, the inner bottom surface of the sampling tube 2 is rotationally connected with a worm 5, the upper end of the worm 5 penetrates through the top of the sampling tube 2 and is fixedly connected with a second bevel gear 6, the second bevel gear 6 is meshed with the first bevel gear 4, a plurality of transmission mechanisms 7 are arranged on the worm 5, each transmission mechanism 7 comprises a screw rod 71, a worm wheel 72 and a nut 73, the screw rod 71 is rotationally connected to the inner side wall of the sampling tube 2, the screw rod 71 is fixedly connected with the worm wheel 72, the worm wheel 72 is meshed with the worm 5, the nut 73 is in threaded connection with the screw rod 71, the nut 73 is fixedly connected with the end part of a piston rod 83 through a bracket, a plurality of sampling mechanisms 8 are arranged in the sampling tube 2, each sampling mechanism 8 comprises a piston tube 81, a piston 82, a piston rod 83, a liquid inlet 84, a suction nozzle 85, a liquid outlet 86 and a connecting tube 87, the piston tube 81 penetrates through the side wall of the sampling tube 2, the piston tube 81 is hermetically and slidingly connected with the piston 82, the piston rod 83 is fixedly connected with the piston 82, the suction nozzle 85 is communicated with the interior of the piston cylinder 81 through a liquid inlet 84, the connecting pipe 87 is communicated with the circumferential side wall of the piston cylinder 81 through a liquid outlet 86, a one-way valve is arranged at the liquid inlet 84, and an electromagnetic valve is arranged at the liquid outlet 86;
the liquid food is introduced into the liquid storage tank 1 through the feed inlet 18, the sampling tube 2 is placed into the liquid storage tank 1 through the through hole 12, the position height of the sampling tube 2 is controlled by the electric telescopic rod 20, the rotating motor 3 is started at the moment, the output end of the rotating motor 3 drives the first bevel gear 4 to rotate, the first bevel gear 4 and the second bevel gear 6 are meshed with each other, the first bevel gear 4 drives the second bevel gear 6 and the worm 5 to rotate, the worm 5 drives the screw rod 71 to rotate through the worm wheel 72, the nut 73 which is in threaded connection with the screw rod 71 is driven to move, the nut 73 is driven to drive the piston rod 83 to move, the piston 82 slides in the piston tube 81 in a sealing manner, the pressure in the piston tube 81 is weakened, the piston tube 81 extracts liquid through the liquid inlet 84 and the suction nozzle 85, the multi-layer synchronous extraction of the food liquid is realized, errors in the precision are avoided in the multi-layer extraction process, and the layered sampling efficiency is improved.
As shown in fig. 1 and fig. 4, a sample mixing tank 9 is fixedly connected to the inner bottom surface of the sampling tube 2, each connecting pipe 87 penetrates through the side wall of the sample mixing tank 9 and is communicated with the interior of the sample mixing tank 9, a mixing mechanism 10 is arranged in the sample mixing tank 9, the mixing mechanism 10 comprises a first gear 101, a rotating shaft 102, a second gear 103 and stirring blades 104, the first gear 101 is fixedly connected to the lower end of a worm 5, the rotating shaft 102 is rotatably connected to the inner bottom surface of the sample mixing tank 9, the upper end of the rotating shaft 102 penetrates through the top of the sample mixing tank 9 and is fixedly connected with the second gear 103, the second gear 103 is meshed with the first gear 101, and a plurality of stirring blades 104 are fixedly connected to the rotating shaft 102;
if the liquid food is semi-solid liquid, when the piston cylinder 81 extracts a certain amount of liquid, the electromagnetic valve at the liquid outlet 86 is opened, and the rotary motor 3 is reversely rotated, so that the pressure in the piston cylinder 81 is increased, and the sampled liquid in the piston cylinder 81 enters the sample mixing tank 9 through the liquid outlet 86 and the connecting pipe 87, and as the first gear 101 and the second gear 103 are meshed with each other, the worm 5 drives the second gear 103 and the rotating shaft 102 to rotate through the first gear 101, and further the stirring blade 104 stirs the mixed layered sampled liquid, so that the multi-layered sampled liquid is mixed more fully and uniformly, the time consumed between manual operation and steps is reduced, and the layered liquid can be mixed at a better time.
As shown in fig. 1 and 4, the bottom of the sampling tube 2 is fixedly connected with a threaded rod 14, the inner bottom surface of the liquid storage tank 1 is rotatably connected with a threaded sleeve 15, a scraper 16 is arranged on the outer side wall of the threaded sleeve 15, and the surfaces of the threaded rod 14 and the threaded sleeve 15 are provided with waterproof and oil-proof coatings;
when high-density or easily-deposited component substances exist in food liquid, the sampling tube 2 is firstly placed into the liquid storage tank 1 through the through hole 12, so that the threaded rod 14 at the bottom of the sampling tube 2 contacts and enters the threaded sleeve 15, at the moment, the food liquid is introduced into the liquid storage tank 1 through the feeding hole 18, and the supporting frame 19 is pressed by proper force, and as the thread rise angle of the threaded rod 14 is far smaller than the friction angle, the threaded rod 14 descends to drive the threaded sleeve 15 to rotate, and then the scraping plate 16 scrapes the sediment at the bottom of the liquid storage tank 1 and floats in the liquid again, so that the sampling rate of the easily-deposited sediment is improved, and the subsequent food health detection is facilitated.
The working principle of the invention is as follows:
when the liquid food sampling device is used, liquid food is introduced into the liquid storage tank 1 through the feed inlet 18, the sampling tube 2 is placed into the liquid storage tank 1 through the through hole 12, the position height of the sampling tube 2 is controlled by the electric telescopic rod 20, the rotating motor 3 is started at the moment, the output end of the rotating motor 3 drives the first bevel gear 4 to rotate, the first bevel gear 4 drives the second bevel gear 6 and the worm 5 to rotate due to the mutual meshing of the first bevel gear 4 and the second bevel gear 6, the worm 5 drives the screw rod 71 to rotate through the worm wheel 72, the nut 73 in threaded connection with the screw rod 71 is driven to move, the nut 73 drives the piston rod 83 to move, the piston 82 slides in a sealing manner in the piston tube 81 and the pressure in the piston tube 81 is weakened, the piston tube 81 extracts liquid through the feed inlet 84 and the suction nozzle 85, the multilayer synchronous extraction of the food liquid is realized due to the arrangement of a plurality of identical sampling mechanisms 8, errors in the precision in the multilayer extraction process are avoided, and the layered sampling efficiency is improved;
if the liquid food is semi-solid liquid, when the piston cylinder 81 extracts a certain amount of liquid, the electromagnetic valve at the liquid outlet 86 is opened, the rotary motor 3 is reversely rotated, so that the pressure in the piston cylinder 81 is increased, the sampled liquid in the piston cylinder 81 enters the sample mixing tank 9 through the liquid outlet 86 and the connecting pipe 87, and as the first gear 101 and the second gear 103 are meshed with each other, the worm 5 drives the second gear 103 and the rotating shaft 102 to rotate through the first gear 101, and the stirring blade 104 is further used for stirring the mixed layered sampled liquid, so that the multi-layered sampled liquid is mixed more fully and uniformly, the time consumed by manual operation and steps is reduced, and the layered liquid can be mixed at a better time;
when high-density or easily-deposited component substances exist in food liquid, the sampling tube 2 is firstly placed into the liquid storage tank 1 through the through hole 12, so that the threaded rod 14 at the bottom of the sampling tube 2 contacts and enters the threaded sleeve 15, at the moment, the food liquid is introduced into the liquid storage tank 1 through the feeding hole 18, and the supporting frame 19 is pressed by proper force, and as the thread rise angle of the threaded rod 14 is far smaller than the friction angle, the threaded rod 14 descends to drive the threaded sleeve 15 to rotate, and then the scraping plate 16 scrapes the sediment at the bottom of the liquid storage tank 1 and floats in the liquid again, so that the sampling rate of the easily-deposited sediment is improved, and the subsequent food health detection is facilitated.
The foregoing is only illustrative of the present invention and is not to be construed as limiting thereof, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present invention.
Claims (9)
1. The utility model provides a layering sampling device for food quality detection, includes liquid reserve tank (1), its characterized in that, sliding connection is run through at liquid reserve tank (1) top has sampling tube (2), fixed surface is connected with rotation motor (3) on sampling tube (2), rotation motor (3) output fixedly connected with first bevel gear (4), the rotation of bottom surface is connected with worm (5) in sampling tube (2), the upper end of worm (5) runs through sampling tube (2) top and fixedly connected with second bevel gear (6), second bevel gear (6) intermesh with first bevel gear (4), be provided with a plurality of drive mechanism (7) on worm (5), be provided with a plurality of sampling mechanism (8) in sampling tube (2);
the sampling mechanism (8) comprises a piston cylinder (81), a piston (82), a piston rod (83), a liquid inlet (84), a suction nozzle (85), a liquid outlet (86) and a connecting pipe (87), wherein the piston cylinder (81) is fixedly connected to the side wall of the sampling cylinder (2) in a penetrating manner, the piston (82) is fixedly connected to the piston (82) in a sealing sliding manner, the piston rod (83) is fixedly connected to the piston (82), the suction nozzle (85) is communicated with the inside of the piston cylinder (81) through the liquid inlet (84), and the connecting pipe (87) is communicated to the circumferential side wall of the piston cylinder (81) through the liquid outlet (86);
the utility model discloses a sample mixing device, including sample tube (2), connecting pipe (87), mixing mechanism (10) are provided with on the interior bottom surface of sample tube (2), every fixedly connected with mixes appearance jar (9) on the interior bottom surface of sample tube (2), every connecting pipe (87) all runs through and mixes appearance jar (9) lateral wall and mix interior intercommunication of appearance jar (9), mix and be provided with in appearance jar (9) and mix mechanism (10).
2. The layered sampling device for food quality detection according to claim 1, wherein the transmission mechanism (7) comprises a screw rod (71), a worm wheel (72) and a nut (73), the screw rod (71) is rotatably connected to the inner side wall of the sampling tube (2), the worm wheel (72) is fixedly connected to the screw rod (71), the worm wheel (72) is meshed with the worm (5), the nut (73) is in threaded connection with the screw rod (71), and the nut (73) is fixedly connected with the end part of the piston rod (83) through a bracket.
3. The layered sampling device for food quality detection according to claim 1, wherein the mixing mechanism (10) comprises a first gear (101), a rotating shaft (102), a second gear (103) and stirring blades (104), the first gear (101) is fixedly connected to the lower end of a worm (5), the rotating shaft (102) is rotatably connected to the inner bottom surface of the mixing tank (9), the upper end of the rotating shaft (102) penetrates through the top of the mixing tank (9) and is fixedly connected with the second gear (103), the second gear (103) is meshed with the first gear (101), and a plurality of stirring blades (104) are fixedly connected to the rotating shaft (102).
4. The layered sampling device for food quality detection according to claim 1, wherein the top of the liquid storage tank (1) is fixedly connected with a box body (11), through holes (12) are formed in the top and the bottom of the box body (11), an ultraviolet sterilizing lamp (13) is fixedly connected to the inner bottom surface of the box body (11), and the ultraviolet sterilizing lamp (13) is in an annular structure.
5. The layered sampling device for food quality detection according to claim 1, wherein a threaded rod (14) is fixedly connected to the bottom of the sampling tube (2), a threaded sleeve (15) is rotatably connected to the inner bottom surface of the liquid storage tank (1), and a scraper (16) is installed on the outer side wall of the threaded sleeve (15).
6. The layered sampling device for food quality detection according to claim 5, wherein the threaded rod (14) and the threaded sleeve (15) are provided with a water and oil repellent coating on their surfaces.
7. The layered sampling device for food quality detection according to claim 1, wherein a one-way valve is provided at the liquid inlet (84), and a solenoid valve is provided at the liquid outlet (86).
8. The layered sampling device for food quality detection according to claim 1, wherein an observation window (17) is formed at the upper end of the side wall of the liquid storage tank (1), transparent glass is arranged at the observation window (17), and a feed inlet (18) is formed in the side wall of the liquid storage tank (1).
9. The layered sampling device for food quality detection according to claim 1, wherein the upper end of the sampling tube (2) is fixedly connected with a supporting frame (19), and two electric telescopic rods (20) are fixedly connected below the supporting frame (19).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116380549A (en) * | 2023-06-05 | 2023-07-04 | 苏州市食品检验检测中心(苏州市食品安全快检中心) | Food inspection sampling equipment |
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