CN113933109A - Food detection sampling equipment - Google Patents
Food detection sampling equipment Download PDFInfo
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- CN113933109A CN113933109A CN202111233984.4A CN202111233984A CN113933109A CN 113933109 A CN113933109 A CN 113933109A CN 202111233984 A CN202111233984 A CN 202111233984A CN 113933109 A CN113933109 A CN 113933109A
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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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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
- A61L2/22—Phase substances, e.g. smokes, aerosols or sprayed or atomised substances
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/26—Accessories or devices or components used for biocidal treatment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/15—Biocide distribution means, e.g. nozzles, pumps, manifolds, fans, baffles, sprayers
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- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
A food detection sampling device relates to a food detection sampling device. The problem of sample pollution is easily caused in order to solve current liquid food or raw materials in food detection sampling process. The food detection sampling device is composed of a control room and a plurality of sampling mechanisms. The invention can realize sterilization and drying of the storage container, opening of the container, sucking of liquid and sealing of the sampling tube before sampling, can avoid sample pollution in the whole sampling process, removes possible microbial pollution sources and ensures the accuracy or reliability of food detection. The control room of the food detection sampling device is matched with a plurality of sampling mechanisms, a plurality of sampling mechanisms can be utilized to carry out simultaneously, the sampling mechanisms can be utilized to carry out preparation sterilization and drying on the storage container, and the inspection efficiency is improved. Meanwhile, the disinfection cover can be self-cleaned. The invention is suitable for food detection and sampling.
Description
Technical Field
The invention relates to a food detection sampling device.
Background
The food safety can be ensured by daily food detection, the safety detection objects of the food comprise raw materials, semi-finished products, various additives, auxiliary materials, products and the like, the detection types are various, the components are complex, and the detection methods are various. The detection items comprise conventional physicochemical items, nutritional ingredients, pesticide residues, food additives, non-food substances, food toxic substances, microorganisms, transgenic products and the like. The detection items of the microorganisms comprise nonpathogenic bacteria such as total number of bacterial colonies, escherichia coli, coliform bacteria, lactic acid bacteria, saccharomycetes and the like; food-borne pathogenic bacteria such as Escherichia coli, Salmonella, Staphylococcus aureus, Streptococcus hemolyticus, Listeria monocytogenes, etc. The microorganisms can be transmitted by contact or airborne. Food safety inspection is to sample, and if sample pollution is caused in the sampling process, detection is invalid, and the influence is large. Liquid food or raw materials are mostly the barreled, and the material mouth of barreled container, lid during the sampling, be used for absorbing the sampler of sample etc. all can carry some pollution sources, and environmental air can propagate some pollution sources such as microorganism equally after the container is opened.
Therefore, there is a need for a device or method that can completely avoid sample contamination during sampling to ensure accuracy or reliability of food detection.
Disclosure of Invention
The invention aims to solve the problem that the existing liquid food or raw materials are easy to cause sample pollution in the food detection and sampling process. A food detection sampling device is provided.
The food detection sampling device consists of a control room 1 and a plurality of sampling mechanisms; the plurality of sampling mechanisms are arranged outside the control room 1;
a partition plate 22 is arranged in the middle of the control chamber 1, and a first high-pressure inert gas storage tank 2, an atomizer 3, a hot air blower 4, a first air pump 5, a second air pump 6, an air pump 7, a liquid storage chamber 16, a fourth air pump 17 and a second high-pressure inert gas storage tank 18 are arranged at the upper part of the partition plate 22 in the control chamber 1; a plurality of sampling tubes 23 are arranged at the lower part of a partition plate 22 in the control room 1;
the sampling mechanism comprises a connecting rod 11, a disinfection cover 12 and a frame 14; the frame 14 is in an inverted U shape, the disinfection cover 12 is arranged below the frame 14, a disinfection cover top plate 48 of the disinfection cover 12 is fixedly connected with the frame 14 through a connecting rod 11, the lower ends of two vertical edges of the frame 14 are respectively provided with a transverse jackscrew 15, the jackscrew 15 is arranged in a threaded hole at the lower end of the vertical edge of the frame 14, and the end part of the inner side of the jackscrew 15 is provided with a pressing block 13;
an annular sealing rubber ring 25 is arranged on the lower end opening of the disinfection cover 12; the middle part of the top plate 48 of the disinfection cover is provided with a strip-shaped gap 31, the strip-shaped gap 31 penetrates through the upper surface and the lower surface of the top plate 48 of the disinfection cover, the center of the top plate 48 of the disinfection cover is provided with a strip-shaped through hole 50, the strip-shaped through hole 50 penetrates through the left side surface and the right side surface of the top plate 48 of the disinfection cover, the strip-shaped plate 32 is arranged in the strip-shaped through hole 50, and the upper part of the strip-shaped plate is provided with a connecting rod through hole 45 and a telescopic pipe mounting hole 46; the middle part of the connecting rod 36 is provided with a connecting rod through hole 45; a U-shaped frame, two L-shaped claws 26 and a sucker 27 are arranged in the disinfection cover 12; the U-shaped frame consists of a cross beam 28 and vertical beams 30 at two ends of the cross beam 28, the opening of the U-shaped frame is over, and the upper ends of the vertical beams 30 are fixedly connected with the lower surface of a top plate 48 of the disinfection cover; one end of the L-shaped clamping jaw 26 is provided with a long strip-shaped open slot 29 along the length direction, the middle part of the L-shaped clamping jaw 26 is hinged with one end of the cross beam 28, one end of the L-shaped clamping jaw 26, which is provided with the long strip-shaped open slot 29, faces to the connecting rod 36, the connecting rod 36 is fixedly connected with the cylindrical sliding block 33, and the free end of the cylindrical sliding block 33 is arranged in the long strip-shaped open slot 29; a vertical threaded through hole is formed in the center of the cross beam 28, the lower part of the connecting rod 36 is arranged in the threaded through hole, and an external thread matched with the threaded through hole is arranged on the surface of the connecting rod; the lower end of the connecting rod 36 is provided with a suction cup 27, the center of the connecting rod 36 is provided with an axial through hole 47, the upper end of the axial through hole 47 is communicated with the second air conveying pipe 10, and the first air pump 5 is connected with the second air conveying pipe 10; the lower end of the axial through hole 47 is communicated with the center of the sucking disc 27;
the telescopic pipe 37 is composed of an inner pipe 39 and an outer pipe 40, one end of the outer pipe 40 is open, the other end of the outer pipe 40 is connected with a pipette 9, and the other end of the pipette 9 extends into the liquid storage chamber 16 from the upper surface of the liquid storage chamber 16; the inner pipe 39 is partially arranged in the outer pipe 40, the outer wall of the end part of the inner pipe 39 in the outer pipe 40 is provided with an inner pipe end enclosure 38, the outer circumference of the inner pipe end enclosure 38 is tightly matched with the inner wall of the outer pipe 40, the open end of the outer pipe 40 is provided with an outer pipe end enclosure 43, and the inner circumference of the outer pipe end enclosure 43 is tightly matched with the outer wall of the inner pipe 39; a pipe joint 42 is arranged on the outer wall of the outer pipe 40, one end of the pipe joint 42 is communicated with the space between the outer pipe 40 and the inner pipe 39, the other end of the pipe joint 42 is connected with the first gas pipe 8, the other end of the first gas pipe 8 is respectively connected with a first branch pipe and a second branch pipe, a valve is arranged on the first branch pipe, and a valve is arranged on the second branch pipe; the other end of the first branch pipe is connected with a second air pump 6, and the other end of the second branch pipe is connected with an air pump 7; the middle part of the outer tube 40 is sleeved with a rubber sleeve 41, and the rubber sleeve 41 is arranged in the telescopic tube mounting hole 46; the liquid suction pipe 9 is provided with a valve;
the pipe orifice of the sampling pipe 23 is provided with a rubber plug 60, the inner wall of the pipe orifice of the sampling pipe 23 is provided with a first annular bulge 63, the outer diameter of the lower end of the rubber plug 60 in the sampling pipe 23 is smaller than that of the pipe orifice of the sampling pipe 23, the outer wall of the lower end of the rubber plug 60 is provided with a second annular bulge 64, the second annular bulge 64 is lower than the first annular bulge 63, and the second annular bulge 64 is provided with an annular recess 65; an axial liquid inlet is formed in the center of the rubber plug 60, a cavity is formed in the periphery of the liquid inlet in the center of the rubber plug 60, paraffin 61 is arranged in the cavity, the paraffin 61 is annular, a semi-annular resistance wire 62 is arranged in the paraffin 61, one end of the resistance wire 62 is connected with a first lead 56, the other end of the resistance wire 62 is connected with a second lead 59, the first lead 56 extends to the end face of the rubber plug 60 and is connected with a second contact 58 arranged on the end face of the rubber plug 60, and the second lead 59 extends to the end face of the rubber plug 60 and is connected with a first contact 57 arranged on the end face of the rubber plug 60; the upper end of the rubber plug 60 is provided with a pipe cap 52, the upper end of the rubber plug 60 is in threaded connection with the pipe cap 52, the upper surface of the bottom of the pipe cap 52 is provided with a liquid inlet pipe 51, the liquid inlet pipe 51 is communicated with the bottom of the liquid storage chamber 16, the lower surface of the bottom of the pipe cap 52 is provided with a liquid inlet needle 55, the liquid inlet needle 55 is communicated with the liquid inlet pipe 51, the liquid inlet needle 55 is arranged in an axial liquid inlet arranged in the center of the rubber plug 60, the lower end of the liquid inlet needle 55 is positioned in the middle of the liquid inlet, the lower surface of the bottom of the pipe cap 52 is provided with a first annular conductor 53 and a second annular conductor 54 which are concentric, the radius of the first annular conductor 53 is smaller than that of the second annular conductor 54, the first annular conductor 53 is in close contact with a first contact 57, and the second annular conductor 54 is in close contact with a second contact 58; the first annular conductor 53 is connected to the positive power supply, and the second annular conductor 54 is connected to the negative power supply;
an air inlet of the fourth air pump 17 is communicated with the upper part of the liquid storage chamber 16, and a valve is arranged on a pipeline connecting the air inlet of the fourth air pump 17 with the upper part of the liquid storage chamber 16; a gas outlet of the second high-pressure inert gas storage tank 18 is communicated with the upper part of the liquid storage chamber 16, and a valve is arranged on a pipeline for connecting the gas outlet of the second high-pressure inert gas storage tank 18 with the upper part of the liquid storage chamber 16; the first high-pressure inert gas storage tank 2 is communicated with the inside of the disinfection cover 12 through a fifth gas pipe 21; the atomizer 3 is communicated with the inside of the disinfection cover 12 through a fourth air delivery pipe 20; the hot air blower 4 is communicated with the inside of the disinfection cover 12 through a fifth air delivery pipe 21; a valve is arranged on the third air pipe 19, a valve is arranged on the fourth air pipe 20, and a valve is arranged on the fifth air pipe 21;
the principle and the beneficial effects of the invention are as follows:
the invention is used for sampling and preserving the samples before the detection of the liquid food or the raw materials. The sampling mechanism is used for opening the liquid sample storage container, sterilizing before opening and sucking the liquid sample.
When the storage container is opened by the sampling mechanism, the disinfection cover 12 is covered on the discharge hole of the storage container, the sealing rubber ring 25 is close to the wall of the container, and the pressing block 13 is pressed against the side wall of the storage container through the jackscrew 15 to fix the disinfection cover 12. Aiming at the storage container of the liquid sample with the threaded bottle cap structure, when the connecting rod 36 in the sampling mechanism rotates, the connecting rod 36 can move up and down relative to the U-shaped frame, the middle part of the L-shaped clamping jaw 26 is hinged with one end of the cross beam 28, and the opening groove 29 of the L-shaped clamping jaw 26 is sleeved on the cylindrical sliding block 33, so that the connecting rod 36 moves up and down to drive the cylindrical sliding block 33 to move, the cylindrical sliding block 33 slides in the opening groove 29 to enable the L-shaped clamping jaw 26 to be opened or closed, the bottle cap can be clamped when the L-shaped clamping jaw 26 is closed, and the connecting rod 36 continues to rotate to open the bottle cap. For the bottle cap with the bottle stopper structure, the bottle stopper is adsorbed on the surface of the bottle cap through the sucking disc 27, the first air suction pump 5 is used for sucking air to improve the adsorption force of the sucking disc 27, and then the bottle stopper is pulled out through the rotating connecting rod 36 to complete opening. The sampling mechanism is thus able to complete the opening of the storage container at the sterile hood 12.
Before storage container opens, can let in the atomizer 3 and suppress the liquid, suppress the liquid atomizing back and carry to the disinfection cover 12 area that covers and disinfect, carry hot-air to disinfection cover 12 through air heater 4 after disinfecting and carry out the drying to the disinfection cover 12 area that covers, can be in an inert environment through environment storage container that high pressure inert gas storage tank 2 made in to disinfection cover 12 after the drying opens preceding disinfection cover 12.
After the storage container is opened, the connecting rod 36 is horizontally moved, the connecting rod 36 drives the strip-shaped plate 32 to move, and the strip-shaped plate 32 drives the telescopic pipe 37 to move above the discharge port; the strip-shaped plate 32 can play a role in sealing the elongated gap 31 and can ensure that the connecting rod 36 and the telescopic tube 37 move horizontally. After the extension tube 37 moves above the discharge hole, gas is pumped into the space between the outer tube 40 and the inner tube 39 through the air pump 7 to realize the extension of the extension tube 37, or the second air pump 6 pumps the gas in the space between the outer tube 40 and the inner tube 39 to realize the contraction of the extension tube 37, when the inner tube 39 in the extension tube 37 extends downwards to the inside of liquid, a valve arranged on a pipeline connecting an air inlet of the fourth air pump 17 with the upper part of the liquid storage chamber 16 and the fourth air pump 17 are opened, a valve arranged on a pipeline connecting an air outlet of the second high-pressure inert gas storage tank 18 with the upper part of the liquid storage chamber 16 is closed, the liquid in the storage container is sucked into the liquid storage chamber 16 under the action of the fourth air pump 17, then the valve arranged on the pipeline connecting the air inlet of the fourth air pump 17 with the upper part of the liquid storage chamber 16 and the fourth air pump 17 are closed, and the valve arranged on a pipeline connecting an air outlet of the second high-pressure inert gas storage tank 18 with the upper part of the liquid storage chamber 16 and the second high-pressure inert gas storage tank 18, the second high-pressure inert gas storage tank 18 is used for inputting high-pressure inert gas into the liquid storage chamber 16 and increasing the internal pressure of the liquid storage chamber 16, and the liquid in the liquid storage chamber 16 is conveyed to the sampling pipe 23 through the liquid inlet pipe 51 and the liquid inlet needle 55, so that the liquid conveying is completed.
The sampling tube 23 needs to be sealed after liquid is conveyed into the sampling tube 23, the sampling tube 23 is pulled downwards at the moment, the upper end of the rubber plug 60 is in threaded connection with the tube cap 52, so that when the sampling tube 23 is pulled downwards, the rubber plug 60 is fixed, the sampling tube 23 moves downwards relative to the rubber plug 60, the sampling tube 23 stops being pulled when the first annular bulge 63 is clamped on the annular recess 65 arranged on the second annular bulge 64, and at the moment, the axial liquid inlet arranged in the center of the rubber plug 60 is closed due to the fact that the lower end of the rubber plug 60 is compressed, and preliminary sealing is achieved; then, a power supply is started to electrify the resistance wire 62, the paraffin 61 is melted after the resistance wire 62 generates heat, the melted paraffin 61 fills an axial liquid inlet arranged at the center of the rubber plug 60, and the paraffin 61 is solidified to finish final sealing after the power supply is stopped. The first annular conductor 53 and the second annular conductor 54 are annular, and can be always in contact with the first contact 57 and the second contact 58 when the sampling tube 23 is rotated. After the final sealing is completed, the sampling tube 23 is unscrewed from the cap 52, and the sampling is completed.
The invention can realize sterilization and drying of the storage container, opening of the container, sucking of liquid and sealing of the sampling tube before sampling, can avoid sample pollution in the whole sampling process, removes possible microbial pollution sources and ensures the accuracy or reliability of food detection.
The control room 1 of the food detection sampling device is matched with a plurality of sampling mechanisms, a plurality of sampling mechanisms can be used for simultaneously carrying out, and the sampling mechanisms can be used for carrying out preliminary sterilization and drying on the storage container, so that the inspection efficiency is improved. While the disinfection hood 12 of the present invention is also self-cleaning.
Drawings
FIG. 1 is a schematic view showing the construction of a food inspection sampling apparatus according to example 1; in the figure, a is a storage container, b is a discharge hole bottle cap of the storage container;
FIG. 2 is a schematic structural view of a sampling mechanism;
FIG. 3 is a cross-sectional view of link 36 with suction cup 27;
FIG. 4 is a schematic structural view of the bellows 37;
FIG. 5 is a sectional view of the bellows 37;
FIG. 6 is a schematic view of the top panel 48 of the sterilization enclosure (with strips);
FIG. 7 is a schematic view of the top panel 48 of the sterilization enclosure (without the strip);
FIG. 8 is a side view of the sterilization enclosure top panel 48;
FIG. 9 is a schematic structural view of strip 32;
FIG. 10 is a schematic view of the structure of the sampling tube 23;
FIG. 11 is a schematic structural view of the cap 52;
fig. 12 is a bottom view of the cap 52.
Detailed Description
The technical scheme of the invention is not limited to the specific embodiments listed below, and any reasonable combination of the specific embodiments is included.
The first embodiment is as follows: the food detection sampling device of the embodiment is composed of a control room 1 and a plurality of sampling mechanisms; the plurality of sampling mechanisms are arranged outside the control room 1;
a partition plate 22 is arranged in the middle of the control chamber 1, and a first high-pressure inert gas storage tank 2, an atomizer 3, a hot air blower 4, a first air pump 5, a second air pump 6, an air pump 7, a liquid storage chamber 16, a fourth air pump 17 and a second high-pressure inert gas storage tank 18 are arranged at the upper part of the partition plate 22 in the control chamber 1; a plurality of sampling tubes 23 are arranged at the lower part of a partition plate 22 in the control room 1;
the sampling mechanism comprises a connecting rod 11, a disinfection cover 12 and a frame 14; the frame 14 is in an inverted U shape, the disinfection cover 12 is arranged below the frame 14, a disinfection cover top plate 48 of the disinfection cover 12 is fixedly connected with the frame 14 through a connecting rod 11, the lower ends of two vertical edges of the frame 14 are respectively provided with a transverse jackscrew 15, the jackscrew 15 is arranged in a threaded hole at the lower end of the vertical edge of the frame 14, and the end part of the inner side of the jackscrew 15 is provided with a pressing block 13;
an annular sealing rubber ring 25 is arranged on the lower end opening of the disinfection cover 12; the middle part of the top plate 48 of the disinfection cover is provided with a strip-shaped gap 31, the strip-shaped gap 31 penetrates through the upper surface and the lower surface of the top plate 48 of the disinfection cover, the center of the top plate 48 of the disinfection cover is provided with a strip-shaped through hole 50, the strip-shaped through hole 50 penetrates through the left side surface and the right side surface of the top plate 48 of the disinfection cover, the strip-shaped plate 32 is arranged in the strip-shaped through hole 50, and the upper part of the strip-shaped plate is provided with a connecting rod through hole 45 and a telescopic pipe mounting hole 46; the middle part of the connecting rod 36 is provided with a connecting rod through hole 45; a U-shaped frame, two L-shaped claws 26 and a sucker 27 are arranged in the disinfection cover 12; the U-shaped frame consists of a cross beam 28 and vertical beams 30 at two ends of the cross beam 28, the opening of the U-shaped frame is over, and the upper ends of the vertical beams 30 are fixedly connected with the lower surface of a top plate 48 of the disinfection cover; one end of the L-shaped clamping jaw 26 is provided with a long strip-shaped open slot 29 along the length direction, the middle part of the L-shaped clamping jaw 26 is hinged with one end of the cross beam 28, one end of the L-shaped clamping jaw 26, which is provided with the long strip-shaped open slot 29, faces to the connecting rod 36, the connecting rod 36 is fixedly connected with the cylindrical sliding block 33, and the free end of the cylindrical sliding block 33 is arranged in the long strip-shaped open slot 29; a vertical threaded through hole is formed in the center of the cross beam 28, the lower part of the connecting rod 36 is arranged in the threaded through hole, and an external thread matched with the threaded through hole is arranged on the surface of the connecting rod; the lower end of the connecting rod 36 is provided with a suction cup 27, the center of the connecting rod 36 is provided with an axial through hole 47, the upper end of the axial through hole 47 is communicated with the second air conveying pipe 10, and the first air pump 5 is connected with the second air conveying pipe 10; the lower end of the axial through hole 47 is communicated with the center of the sucking disc 27;
the telescopic pipe 37 is composed of an inner pipe 39 and an outer pipe 40, one end of the outer pipe 40 is open, the other end of the outer pipe 40 is connected with a pipette 9, and the other end of the pipette 9 extends into the liquid storage chamber 16 from the upper surface of the liquid storage chamber 16; the inner pipe 39 is partially arranged in the outer pipe 40, the outer wall of the end part of the inner pipe 39 in the outer pipe 40 is provided with an inner pipe end enclosure 38, the outer circumference of the inner pipe end enclosure 38 is tightly matched with the inner wall of the outer pipe 40, the open end of the outer pipe 40 is provided with an outer pipe end enclosure 43, and the inner circumference of the outer pipe end enclosure 43 is tightly matched with the outer wall of the inner pipe 39; a pipe joint 42 is arranged on the outer wall of the outer pipe 40, one end of the pipe joint 42 is communicated with the space between the outer pipe 40 and the inner pipe 39, the other end of the pipe joint 42 is connected with the first gas pipe 8, the other end of the first gas pipe 8 is respectively connected with a first branch pipe and a second branch pipe, a valve is arranged on the first branch pipe, and a valve is arranged on the second branch pipe; the other end of the first branch pipe is connected with a second air pump 6, and the other end of the second branch pipe is connected with an air pump 7; the middle part of the outer tube 40 is sleeved with a rubber sleeve 41, and the rubber sleeve 41 is arranged in the telescopic tube mounting hole 46; the liquid suction pipe 9 is provided with a valve;
the pipe orifice of the sampling pipe 23 is provided with a rubber plug 60, the inner wall of the pipe orifice of the sampling pipe 23 is provided with a first annular bulge 63, the outer diameter of the lower end of the rubber plug 60 in the sampling pipe 23 is smaller than that of the pipe orifice of the sampling pipe 23, the outer wall of the lower end of the rubber plug 60 is provided with a second annular bulge 64, the second annular bulge 64 is lower than the first annular bulge 63, and the second annular bulge 64 is provided with an annular recess 65; an axial liquid inlet is formed in the center of the rubber plug 60, a cavity is formed in the periphery of the liquid inlet in the center of the rubber plug 60, paraffin 61 is arranged in the cavity, the paraffin 61 is annular, a semi-annular resistance wire 62 is arranged in the paraffin 61, one end of the resistance wire 62 is connected with a first lead 56, the other end of the resistance wire 62 is connected with a second lead 59, the first lead 56 extends to the end face of the rubber plug 60 and is connected with a second contact 58 arranged on the end face of the rubber plug 60, and the second lead 59 extends to the end face of the rubber plug 60 and is connected with a first contact 57 arranged on the end face of the rubber plug 60; the upper end of the rubber plug 60 is provided with a pipe cap 52, the upper end of the rubber plug 60 is in threaded connection with the pipe cap 52, the upper surface of the bottom of the pipe cap 52 is provided with a liquid inlet pipe 51, the liquid inlet pipe 51 is communicated with the bottom of the liquid storage chamber 16, the lower surface of the bottom of the pipe cap 52 is provided with a liquid inlet needle 55, the liquid inlet needle 55 is communicated with the liquid inlet pipe 51, the liquid inlet needle 55 is arranged in an axial liquid inlet arranged in the center of the rubber plug 60, the lower end of the liquid inlet needle 55 is positioned in the middle of the liquid inlet, the lower surface of the bottom of the pipe cap 52 is provided with a first annular conductor 53 and a second annular conductor 54 which are concentric, the radius of the first annular conductor 53 is smaller than that of the second annular conductor 54, the first annular conductor 53 is in close contact with a first contact 57, and the second annular conductor 54 is in close contact with a second contact 58; the first annular conductor 53 is connected to the positive power supply, and the second annular conductor 54 is connected to the negative power supply;
an air inlet of the fourth air pump 17 is communicated with the upper part of the liquid storage chamber 16, and a valve is arranged on a pipeline connecting the air inlet of the fourth air pump 17 with the upper part of the liquid storage chamber 16; a gas outlet of the second high-pressure inert gas storage tank 18 is communicated with the upper part of the liquid storage chamber 16, and a valve is arranged on a pipeline for connecting the gas outlet of the second high-pressure inert gas storage tank 18 with the upper part of the liquid storage chamber 16; the first high-pressure inert gas storage tank 2 is communicated with the inside of the disinfection cover 12 through a fifth gas pipe 21; the atomizer 3 is communicated with the inside of the disinfection cover 12 through a fourth air delivery pipe 20; the hot air blower 4 is communicated with the inside of the disinfection cover 12 through a fifth air delivery pipe 21; a valve is arranged on the third air pipe 19, a valve is arranged on the fourth air pipe 20, and a valve is arranged on the fifth air pipe 21.
The embodiment has the following beneficial effects:
this embodiment can realize that storage container's sterilization, drying, opening of container, the absorption of liquid, sampling tube are sealed before the sampling, and whole sampling process can avoid the sample pollution, gets rid of the microorganism pollution source that probably exists, guarantees food detection's accuracy or reliability.
This embodiment food detection sampling equipment's control room 1 is supporting to be equipped with several sampling mechanism, can utilize a plurality of sampling mechanism to go on simultaneously, can utilize sampling mechanism to prepare the storage container and disinfect and dry, improves inspection efficiency. While the disinfection hood 12 in this embodiment is also self-cleaning.
The second embodiment is as follows: the first difference between the present embodiment and the specific embodiment is: an ultraviolet lamp 24 is arranged at the lower part of a partition plate 22 in the control room 1; the ultraviolet lamp 24 can carry out ultraviolet sterilization to the lower part of the clapboard 22, and the environment cleanness before and after sampling of the sampling tube 23 is ensured.
The third concrete implementation mode: the present embodiment differs from the first or second embodiment in that: the handle 35 is arranged on the connecting rod 36 at the upper part of the top plate 48 of the disinfection cover.
The fourth concrete implementation mode: the difference between this embodiment mode and one of the first to third embodiment modes is: the second air pipe 10 is provided with a suction cup vent valve 34.
The fifth concrete implementation mode: the difference between this embodiment and one of the first to fourth embodiments is: a mechanical seal is provided between the connecting rod 36 and the connecting rod passing hole 45.
Embodiment 1, with reference to fig. 1 to 12, the food detection sampling device of this embodiment is composed of a control room 1 and a plurality of sampling mechanisms; the plurality of sampling mechanisms are arranged outside the control room 1;
a partition plate 22 is arranged in the middle of the control chamber 1, and a first high-pressure inert gas storage tank 2, an atomizer 3, a hot air blower 4, a first air pump 5, a second air pump 6, an air pump 7, a liquid storage chamber 16, a fourth air pump 17 and a second high-pressure inert gas storage tank 18 are arranged at the upper part of the partition plate 22 in the control chamber 1; a plurality of sampling tubes 23 are arranged at the lower part of a partition plate 22 in the control room 1;
the sampling mechanism comprises a connecting rod 11, a disinfection cover 12 and a frame 14; the frame 14 is in an inverted U shape, the disinfection cover 12 is arranged below the frame 14, a disinfection cover top plate 48 of the disinfection cover 12 is fixedly connected with the frame 14 through a connecting rod 11, the lower ends of two vertical edges of the frame 14 are respectively provided with a transverse jackscrew 15, the jackscrew 15 is arranged in a threaded hole at the lower end of the vertical edge of the frame 14, and the end part of the inner side of the jackscrew 15 is provided with a pressing block 13;
an annular sealing rubber ring 25 is arranged on the lower end opening of the disinfection cover 12; the middle part of the top plate 48 of the disinfection cover is provided with a strip-shaped gap 31, the strip-shaped gap 31 penetrates through the upper surface and the lower surface of the top plate 48 of the disinfection cover, the center of the top plate 48 of the disinfection cover is provided with a strip-shaped through hole 50, the strip-shaped through hole 50 penetrates through the left side surface and the right side surface of the top plate 48 of the disinfection cover, the strip-shaped plate 32 is arranged in the strip-shaped through hole 50, and the upper part of the strip-shaped plate is provided with a connecting rod through hole 45 and a telescopic pipe mounting hole 46; the middle part of the connecting rod 36 is provided with a connecting rod through hole 45; a U-shaped frame, two L-shaped claws 26 and a sucker 27 are arranged in the disinfection cover 12; the U-shaped frame consists of a cross beam 28 and vertical beams 30 at two ends of the cross beam 28, the opening of the U-shaped frame is over, and the upper ends of the vertical beams 30 are fixedly connected with the lower surface of a top plate 48 of the disinfection cover; one end of the L-shaped clamping jaw 26 is provided with a long strip-shaped open slot 29 along the length direction, the middle part of the L-shaped clamping jaw 26 is hinged with one end of the cross beam 28, one end of the L-shaped clamping jaw 26, which is provided with the long strip-shaped open slot 29, faces to the connecting rod 36, the connecting rod 36 is fixedly connected with the cylindrical sliding block 33, and the free end of the cylindrical sliding block 33 is arranged in the long strip-shaped open slot 29; a vertical threaded through hole is formed in the center of the cross beam 28, the lower part of the connecting rod 36 is arranged in the threaded through hole, and an external thread matched with the threaded through hole is arranged on the surface of the connecting rod; the lower end of the connecting rod 36 is provided with a suction cup 27, the center of the connecting rod 36 is provided with an axial through hole 47, the upper end of the axial through hole 47 is communicated with the second air conveying pipe 10, and the first air pump 5 is connected with the second air conveying pipe 10; the lower end of the axial through hole 47 is communicated with the center of the sucking disc 27;
the telescopic pipe 37 is composed of an inner pipe 39 and an outer pipe 40, one end of the outer pipe 40 is open, the other end of the outer pipe 40 is connected with a pipette 9, and the other end of the pipette 9 extends into the liquid storage chamber 16 from the upper surface of the liquid storage chamber 16; the inner pipe 39 is partially arranged in the outer pipe 40, the outer wall of the end part of the inner pipe 39 in the outer pipe 40 is provided with an inner pipe end enclosure 38, the outer circumference of the inner pipe end enclosure 38 is tightly matched with the inner wall of the outer pipe 40, the open end of the outer pipe 40 is provided with an outer pipe end enclosure 43, and the inner circumference of the outer pipe end enclosure 43 is tightly matched with the outer wall of the inner pipe 39; a pipe joint 42 is arranged on the outer wall of the outer pipe 40, one end of the pipe joint 42 is communicated with the space between the outer pipe 40 and the inner pipe 39, the other end of the pipe joint 42 is connected with the first gas pipe 8, the other end of the first gas pipe 8 is respectively connected with a first branch pipe and a second branch pipe, a valve is arranged on the first branch pipe, and a valve is arranged on the second branch pipe; the other end of the first branch pipe is connected with a second air pump 6, and the other end of the second branch pipe is connected with an air pump 7; the middle part of the outer tube 40 is sleeved with a rubber sleeve 41, and the rubber sleeve 41 is arranged in the telescopic tube mounting hole 46; the liquid suction pipe 9 is provided with a valve;
the pipe orifice of the sampling pipe 23 is provided with a rubber plug 60, the inner wall of the pipe orifice of the sampling pipe 23 is provided with a first annular bulge 63, the outer diameter of the lower end of the rubber plug 60 in the sampling pipe 23 is smaller than that of the pipe orifice of the sampling pipe 23, the outer wall of the lower end of the rubber plug 60 is provided with a second annular bulge 64, the second annular bulge 64 is lower than the first annular bulge 63, and the second annular bulge 64 is provided with an annular recess 65; an axial liquid inlet is formed in the center of the rubber plug 60, a cavity is formed in the periphery of the liquid inlet in the center of the rubber plug 60, paraffin 61 is arranged in the cavity, the paraffin 61 is annular, a semi-annular resistance wire 62 is arranged in the paraffin 61, one end of the resistance wire 62 is connected with a first lead 56, the other end of the resistance wire 62 is connected with a second lead 59, the first lead 56 extends to the end face of the rubber plug 60 and is connected with a second contact 58 arranged on the end face of the rubber plug 60, and the second lead 59 extends to the end face of the rubber plug 60 and is connected with a first contact 57 arranged on the end face of the rubber plug 60; the upper end of the rubber plug 60 is provided with a pipe cap 52, the upper end of the rubber plug 60 is in threaded connection with the pipe cap 52, the upper surface of the bottom of the pipe cap 52 is provided with a liquid inlet pipe 51, the liquid inlet pipe 51 is communicated with the bottom of the liquid storage chamber 16, the lower surface of the bottom of the pipe cap 52 is provided with a liquid inlet needle 55, the liquid inlet needle 55 is communicated with the liquid inlet pipe 51, the liquid inlet needle 55 is arranged in an axial liquid inlet arranged in the center of the rubber plug 60, the lower end of the liquid inlet needle 55 is positioned in the middle of the liquid inlet, the lower surface of the bottom of the pipe cap 52 is provided with a first annular conductor 53 and a second annular conductor 54 which are concentric, the radius of the first annular conductor 53 is smaller than that of the second annular conductor 54, the first annular conductor 53 is in close contact with a first contact 57, and the second annular conductor 54 is in close contact with a second contact 58; the first annular conductor 53 is connected to the positive power supply, and the second annular conductor 54 is connected to the negative power supply;
an air inlet of the fourth air pump 17 is communicated with the upper part of the liquid storage chamber 16, and a valve is arranged on a pipeline connecting the air inlet of the fourth air pump 17 with the upper part of the liquid storage chamber 16; a gas outlet of the second high-pressure inert gas storage tank 18 is communicated with the upper part of the liquid storage chamber 16, and a valve is arranged on a pipeline for connecting the gas outlet of the second high-pressure inert gas storage tank 18 with the upper part of the liquid storage chamber 16; the first high-pressure inert gas storage tank 2 is communicated with the inside of the disinfection cover 12 through a fifth gas pipe 21; the atomizer 3 is communicated with the inside of the disinfection cover 12 through a fourth air delivery pipe 20; the hot air blower 4 is communicated with the inside of the disinfection cover 12 through a fifth air delivery pipe 21; a valve is arranged on the third air pipe 19, a valve is arranged on the fourth air pipe 20, and a valve is arranged on the fifth air pipe 21;
an ultraviolet lamp 24 is arranged at the lower part of a partition plate 22 in the control room 1; the ultraviolet lamp 24 can carry out ultraviolet sterilization to the lower part of the clapboard 22, and the environment cleanness before and after sampling of the sampling tube 23 is ensured. A handle 35 is arranged on the connecting rod 36 at the upper part of the top plate 48 of the disinfection cover; the second air delivery pipe 10 is provided with a sucker vent valve 34; a mechanical seal is arranged between the connecting rod 36 and the connecting rod through hole 45;
the present embodiment is used for sampling and storing a sample before testing a liquid food or a raw material. The sampling mechanism is used for opening the liquid sample storage container, sterilizing before opening and sucking the liquid sample.
When the storage container is opened by the sampling mechanism, the disinfection cover 12 is covered on the discharge hole of the storage container, the sealing rubber ring 25 is close to the wall of the container, and the pressing block 13 is pressed against the side wall of the storage container through the jackscrew 15 to fix the disinfection cover 12. Aiming at the storage container of the liquid sample with the threaded bottle cap structure, when the connecting rod 36 in the sampling mechanism rotates, the connecting rod 36 can move up and down relative to the U-shaped frame, the middle part of the L-shaped clamping jaw 26 is hinged with one end of the cross beam 28, and the opening groove 29 of the L-shaped clamping jaw 26 is sleeved on the cylindrical sliding block 33, so that the connecting rod 36 moves up and down to drive the cylindrical sliding block 33 to move, the cylindrical sliding block 33 slides in the opening groove 29 to enable the L-shaped clamping jaw 26 to be opened or closed, the bottle cap can be clamped when the L-shaped clamping jaw 26 is closed, and the connecting rod 36 continues to rotate to open the bottle cap. For the bottle cap with the bottle stopper structure, the bottle stopper is adsorbed on the surface of the bottle cap through the sucking disc 27, the first air suction pump 5 is used for sucking air to improve the adsorption force of the sucking disc 27, and then the bottle stopper is pulled out through the rotating connecting rod 36 to complete opening. The sampling mechanism is thus able to complete the opening of the storage container at the sterile hood 12.
Before storage container opens, can let in the atomizer 3 and suppress the liquid, suppress the liquid atomizing back and carry to the disinfection cover 12 area that covers and disinfect, carry hot-air to disinfection cover 12 through air heater 4 after disinfecting and carry out the drying to the disinfection cover 12 area that covers, can be in an inert environment through environment storage container that high pressure inert gas storage tank 2 made in to disinfection cover 12 after the drying opens preceding disinfection cover 12.
After the storage container is opened, the connecting rod 36 is horizontally moved, the connecting rod 36 drives the strip-shaped plate 32 to move, and the strip-shaped plate 32 drives the telescopic pipe 37 to move above the discharge port; the strip-shaped plate 32 can play a role in sealing the elongated gap 31 and can ensure that the connecting rod 36 and the telescopic tube 37 move horizontally. After the extension tube 37 moves above the discharge hole, gas is pumped into the space between the outer tube 40 and the inner tube 39 through the air pump 7 to realize the extension of the extension tube 37, or the second air pump 6 pumps the gas in the space between the outer tube 40 and the inner tube 39 to realize the contraction of the extension tube 37, when the inner tube 39 in the extension tube 37 extends downwards to the inside of liquid, a valve arranged on a pipeline connecting an air inlet of the fourth air pump 17 with the upper part of the liquid storage chamber 16 and the fourth air pump 17 are opened, a valve arranged on a pipeline connecting an air outlet of the second high-pressure inert gas storage tank 18 with the upper part of the liquid storage chamber 16 is closed, the liquid in the storage container is sucked into the liquid storage chamber 16 under the action of the fourth air pump 17, then the valve arranged on the pipeline connecting the air inlet of the fourth air pump 17 with the upper part of the liquid storage chamber 16 and the fourth air pump 17 are closed, and the valve arranged on a pipeline connecting an air outlet of the second high-pressure inert gas storage tank 18 with the upper part of the liquid storage chamber 16 and the second high-pressure inert gas storage tank 18, the second high-pressure inert gas storage tank 18 is used for inputting high-pressure inert gas into the liquid storage chamber 16 and increasing the internal pressure of the liquid storage chamber 16, and the liquid in the liquid storage chamber 16 is conveyed to the sampling pipe 23 through the liquid inlet pipe 51 and the liquid inlet needle 55, so that the liquid conveying is completed.
The sampling tube 23 needs to be sealed after liquid is conveyed into the sampling tube 23, the sampling tube 23 is pulled downwards at the moment, the upper end of the rubber plug 60 is in threaded connection with the tube cap 52, so that when the sampling tube 23 is pulled downwards, the rubber plug 60 is fixed, the sampling tube 23 moves downwards relative to the rubber plug 60, the sampling tube 23 stops being pulled when the first annular bulge 63 is clamped on the annular recess 65 arranged on the second annular bulge 64, and at the moment, the axial liquid inlet arranged in the center of the rubber plug 60 is closed due to the fact that the lower end of the rubber plug 60 is compressed, and preliminary sealing is achieved; then, a power supply is started to electrify the resistance wire 62, the paraffin 61 is melted after the resistance wire 62 generates heat, the melted paraffin 61 fills an axial liquid inlet arranged at the center of the rubber plug 60, and the paraffin 61 is solidified to finish final sealing after the power supply is stopped. The first annular conductor 53 and the second annular conductor 54 are annular, and can be always in contact with the first contact 57 and the second contact 58 when the sampling tube 23 is rotated. After the final sealing is completed, the sampling tube 23 is unscrewed from the cap 52, and the sampling is completed.
This embodiment can realize that storage container's sterilization, drying, opening of container, the absorption of liquid, sampling tube are sealed before the sampling, and whole sampling process can avoid the sample pollution, gets rid of the microorganism pollution source that probably exists, guarantees food detection's accuracy or reliability.
This embodiment food detection sampling equipment's control room 1 is supporting to be equipped with several sampling mechanism, can utilize a plurality of sampling mechanism to go on simultaneously, can utilize sampling mechanism to prepare the storage container and disinfect and dry, improves inspection efficiency. While the disinfection hood 12 in this embodiment is also self-cleaning.
Claims (5)
1. A food detection sampling device, its characterized in that: the food detection sampling device consists of a control room (1) and a plurality of sampling mechanisms; the plurality of sampling mechanisms are arranged outside the control room (1);
a partition plate (22) is arranged in the middle of the control chamber (1), and a first high-pressure inert gas storage tank (2), an atomizer (3), a hot air blower (4), a first air pump (5), a second air pump (6), an air pump (7), a liquid storage chamber (16), a fourth air pump (17) and a second high-pressure inert gas storage tank (18) are arranged at the upper part of the partition plate (22) in the control chamber (1); a plurality of sampling tubes (23) are arranged at the lower part of the partition plate (22) in the control room (1);
the sampling mechanism comprises a connecting rod (11), a disinfection cover (12) and a frame (14); the frame (14) is in an inverted U shape, the disinfection cover (12) is arranged below the frame (14), a disinfection cover top plate (48) of the disinfection cover (12) is fixedly connected with the frame (14) through a connecting rod (11), the lower ends of two vertical edges of the frame (14) are respectively provided with a transverse jackscrew (15), the jackscrew (15) is arranged in a threaded hole at the lower end of the vertical edge of the frame (14), and the end part of the inner side of the jackscrew (15) is provided with a pressing block (13);
an annular sealing rubber ring (25) is arranged on the lower end opening of the disinfection cover (12); a strip-shaped notch (31) is formed in the middle of the top plate (48) of the disinfection cover, the strip-shaped notch (31) penetrates through the upper surface and the lower surface of the top plate (48) of the disinfection cover, a strip-shaped through hole (50) is formed in the center of the top plate (48) of the disinfection cover, the strip-shaped through hole (50) penetrates through the left side surface and the right side surface of the top plate (48) of the disinfection cover, a strip-shaped plate (32) is arranged in the strip-shaped through hole (50), and a connecting rod through hole (45) and a telescopic pipe mounting hole (46) are formed in the upper portion of the strip-shaped plate; the middle part of the connecting rod (36) is provided with a connecting rod through hole (45); a U-shaped frame, two L-shaped clamping jaws (26) and a sucking disc (27) are arranged in the disinfection cover (12); the U-shaped frame consists of a cross beam (28) and vertical beams (30) at two ends of the cross beam (28), the opening of the U-shaped frame is over, and the upper ends of the vertical beams (30) are fixedly connected with the lower surface of a top plate (48) of the disinfection cover; one end of the L-shaped clamping jaw (26) is provided with a long strip-shaped open slot (29) along the length direction, the middle part of the L-shaped clamping jaw (26) is hinged with one end of the cross beam (28), one end of the L-shaped clamping jaw (26) provided with the long strip-shaped open slot (29) faces to the connecting rod (36), the connecting rod (36) is fixedly connected with a cylindrical sliding block (33), and the free end of the cylindrical sliding block (33) is arranged in the long strip-shaped open slot (29); a vertical threaded through hole is formed in the center of the cross beam (28), the lower part of the connecting rod (36) is arranged in the threaded through hole, and an external thread matched with the threaded through hole is formed in the surface of the connecting rod; the lower end of the connecting rod (36) is provided with a sucker (27), the center of the connecting rod (36) is provided with an axial through hole (47), the upper end of the axial through hole (47) is communicated with the second air conveying pipe (10), and the first air suction pump (5) is connected with the second air conveying pipe (10); the lower end of the axial through hole (47) is communicated with the center of the sucking disc (27);
the telescopic pipe (37) is composed of an inner pipe (39) and an outer pipe (40), one end of the outer pipe (40) is open, the other end of the outer pipe (40) is connected with a liquid suction pipe (9), and the other end of the liquid suction pipe (9) extends into the liquid storage chamber (16) from the upper surface of the liquid storage chamber (16); the inner pipe (39) is partially arranged in the outer pipe (40), an inner pipe end enclosure (38) is arranged on the outer wall of the end part of the inner pipe (39) in the outer pipe (40), the outer circumference of the inner pipe end enclosure (38) is tightly matched with the inner wall of the outer pipe (40), an outer pipe end enclosure (43) is arranged at the opening end of the outer pipe (40), and the inner circumference of the outer pipe end enclosure (43) is tightly matched with the outer wall of the inner pipe (39); a pipe joint (42) is arranged on the outer wall of the outer pipe (40), one end of the pipe joint (42) is communicated with the space between the outer pipe (40) and the inner pipe (39), the other end of the pipe joint (42) is connected with a first gas conveying pipe (8), the other end of the first gas conveying pipe (8) is respectively connected with a first branch pipe and a second branch pipe, a valve is arranged on the first branch pipe, and a valve is arranged on the second branch pipe; the other end of the first branch pipe is connected with a second air pump (6), and the other end of the second branch pipe is connected with an air pump (7); the middle part of the outer pipe (40) is sleeved with a rubber sleeve (41), and the rubber sleeve (41) is arranged in the telescopic pipe mounting hole (46); a valve is arranged on the liquid suction pipe (9);
a rubber plug (60) is arranged at the pipe orifice of the sampling pipe (23), a first annular bulge (63) is arranged on the inner wall of the pipe orifice of the sampling pipe (23), the outer diameter of the lower end of the rubber plug (60) in the sampling pipe (23) is smaller than that of the pipe orifice of the sampling pipe (23), a second annular bulge (64) is arranged on the outer wall of the lower end of the rubber plug (60), the second annular bulge (64) is lower than the first annular bulge (63), and an annular recess (65) is arranged on the second annular bulge (64); an axial liquid inlet is formed in the center of the rubber plug (60), a cavity is formed in the periphery of the liquid inlet in the center of the rubber plug (60), paraffin (61) is arranged in the cavity, a semi-annular resistance wire (62) is arranged in the paraffin (61), one end of the resistance wire (62) is connected with a first lead (56), the other end of the resistance wire (62) is connected with a second lead (59), the first lead (56) extends to the end face of the rubber plug (60) and is connected with a second contact (58) arranged on the end face of the rubber plug (60), and the second lead (59) extends to the end face of the rubber plug (60) and is connected with a first contact (57) arranged on the end face of the rubber plug (60); the upper end of the rubber plug (60) is provided with a pipe cap (52), the upper end of the rubber plug (60) is in threaded connection with the pipe cap (52), the upper surface of the bottom of the pipe cap (52) is provided with a liquid inlet pipe (51), the liquid inlet pipe (51) is communicated with the bottom of the liquid storage chamber (16), the lower surface of the bottom of the pipe cap (52) is provided with a liquid inlet needle (55), the liquid inlet needle (55) is communicated with the liquid inlet pipe (51), the liquid inlet needle (55) is arranged in an axial liquid inlet arranged at the center of the rubber plug (60), the lower end of the liquid inlet needle (55) is positioned in the middle of the liquid inlet, the lower surface of the bottom of the pipe cap (52) is provided with a first annular conductor (53) and a second annular conductor (54) which are concentric, the radius of the first annular conductor (53) is smaller than that of the second annular conductor (54), the first annular conductor (53) is in close contact with the first contact (57), and the second annular conductor (54) is in close contact with the second contact (58); the first annular conductor (53) is connected with the positive pole of the power supply, and the second annular conductor (54) is connected with the negative pole of the power supply;
an air inlet of the fourth air pump (17) is communicated with the upper part of the liquid storage chamber (16), and a valve is arranged on a pipeline connecting the air inlet of the fourth air pump (17) and the upper part of the liquid storage chamber (16); a gas outlet of the second high-pressure inert gas storage tank (18) is communicated with the upper part of the liquid storage chamber (16), and a valve is arranged on a pipeline for connecting the gas outlet of the second high-pressure inert gas storage tank (18) with the upper part of the liquid storage chamber (16); the first high-pressure inert gas storage tank (2) is communicated with the inside of the disinfection cover (12) through a fifth gas pipe (21); the atomizer (3) is communicated with the inside of the disinfection cover (12) through a fourth air delivery pipe (20); the hot air blower (4) is communicated with the inside of the disinfection cover (12) through a fifth air delivery pipe (21); the third air delivery pipe (19) is provided with a valve, the fourth air delivery pipe (20) is provided with a valve, and the fifth air delivery pipe (21) is provided with a valve.
2. The food testing and sampling device of claim 1, wherein: an ultraviolet lamp (24) is arranged at the lower part of the partition plate (22) in the control room (1); the ultraviolet lamp (24) can carry out ultraviolet sterilization to the lower part of the clapboard (22), and the cleanness of the environment before and after sampling by the sampling tube (23) is ensured.
3. The food testing and sampling device of claim 1, wherein: a handle (35) is arranged on the connecting rod (36) at the upper part of the top plate (48) of the disinfection cover.
4. The food testing and sampling device of claim 1, wherein: the second air delivery pipe (10) is provided with a sucker ventilation valve (34).
5. The food testing and sampling device of claim 1, wherein: a mechanical seal is provided between the connecting rod (36) and the connecting rod passing hole (45).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111233984.4A CN113933109B (en) | 2021-10-22 | 2021-10-22 | Food detection sampling equipment |
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| CN202111233984.4A CN113933109B (en) | 2021-10-22 | 2021-10-22 | Food detection sampling equipment |
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| CN113933109B CN113933109B (en) | 2022-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115628947A (en) * | 2022-12-20 | 2023-01-20 | 山东群鑫助剂有限公司 | Sampling device for methyl thioglycolate detection |
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| US20140216176A1 (en) * | 2011-08-10 | 2014-08-07 | Geoservices Equipements | Device for Extracting at Least One Gas Contained in A Circulating Fluid |
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| CN108444764A (en) * | 2018-03-20 | 2018-08-24 | 郑州龙威电气安装有限公司 | A kind of grain sampler for surveying sampling depth |
| CN214096740U (en) * | 2020-12-11 | 2021-08-31 | 郑州科技学院 | Sampling device for detecting trace elements in food |
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| EP0942275A2 (en) * | 1998-03-12 | 1999-09-15 | British Steel Plc | Sampling device |
| US20140216176A1 (en) * | 2011-08-10 | 2014-08-07 | Geoservices Equipements | Device for Extracting at Least One Gas Contained in A Circulating Fluid |
| CN206974738U (en) * | 2017-07-14 | 2018-02-06 | 兰州大学第一医院 | A kind of medical test probe tube |
| CN108444764A (en) * | 2018-03-20 | 2018-08-24 | 郑州龙威电气安装有限公司 | A kind of grain sampler for surveying sampling depth |
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| CN115628947A (en) * | 2022-12-20 | 2023-01-20 | 山东群鑫助剂有限公司 | Sampling device for methyl thioglycolate detection |
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| CN113933109B (en) | 2022-05-03 |
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