CN111999414B - Device and method for detecting pesticide and veterinary drug residues in food - Google Patents
Device and method for detecting pesticide and veterinary drug residues in food Download PDFInfo
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- CN111999414B CN111999414B CN202010653095.2A CN202010653095A CN111999414B CN 111999414 B CN111999414 B CN 111999414B CN 202010653095 A CN202010653095 A CN 202010653095A CN 111999414 B CN111999414 B CN 111999414B
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
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Abstract
The invention discloses a device and a method for detecting pesticide and veterinary drug residues in food, and relates to the field of fast food detection. According to the invention, through the parts such as the extraction bin, the first motor, the crushing paddle, the funnel, the second motor, the washing pipe, the filter screen, the first vibrating motor, the first guide plate, the first control valve and the like, the automation of the extraction and purification of samples is realized, an operator only needs to input sampling raw materials into the feed inlet, and a series of operations of the extraction and purification lamp can be completed by the device until the extracted and purified materials enter the gas chromatograph for detection, so that the manual operation is reduced, the detection efficiency is improved, and the labor intensity is lightened.
Description
Technical Field
The invention relates to the field of fast food detection, in particular to a device and a method for detecting pesticide and veterinary drug residues in food.
Background
The food safety detection is to detect harmful substances in food according to national indexes, mainly detecting some indexes such as heavy metals, aflatoxins and the like, one important aspect of food science and engineering is to introduce and use chemical unit operation and develop food engineering unit operation, thereby promoting the development of the food industry to large-scale, continuous and automatic directions, and after pesticide preparation is directly applied to crops, the permeable pesticide is mainly adhered to the surfaces of the crops such as vegetables, fruits and the like, and most of the pesticide can be washed off, so that the pesticide concentration on the surfaces of the crops is higher than that in the crops.
The existing food veterinary drug residue detection device needs manual operation for sample extraction and purification, is troublesome to operate and low in extraction efficiency, and the existing food veterinary drug residue detection device needs a secondary blank test after carrying out a primary extraction test, so that the extraction test and the blank test cannot be carried out simultaneously, and the total detection duration is long.
Disclosure of Invention
The invention aims at: in order to solve the problems that the existing food veterinary drug residue detection device needs manual operation for sample extraction and purification, is troublesome to operate and low in extraction efficiency, and the existing food veterinary drug residue detection device needs a secondary blank test after performing one-time extraction test, so that the extraction test and the blank test cannot be performed simultaneously, and the total detection duration is long, the food veterinary drug residue detection device and the detection method are provided.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a pesticide residue detection device and detection method in food, includes draws the storehouse, the inside that draws the storehouse is provided with the baffle, and draws the top in storehouse and install first motor, the output of first motor is connected with first action wheel, and one side of first action wheel is connected with first follow driving wheel, the bottom of first action wheel and first follow driving wheel all is connected with crushing oar, the inside that draws the storehouse is located crushing oar is provided with first discharge pipe, and the below of first discharge pipe is connected with the funnel, the second motor is installed to one side of funnel, and one side of funnel top is provided with the washing pipe, the below of funnel is provided with the filter screen, and one side of filter screen is installed first vibrating motor, the below of filter screen is provided with first guide plate, and the bottom of first guide plate is connected with first control valve, the bottom of first control valve is connected with the second discharge pipe, the below of first guide plate is provided with the second guide plate, and the bottom of second guide plate is connected with the second control valve, the below of second control valve is provided with the motor, and the below of second guide plate is connected with the funnel, and the inside of second guide plate is provided with the inside of second guide plate, and is provided with the inside of second guide plate, the inside of second guide plate is provided with the first side of filter screen, the first side of filter screen is connected with the first vibration motor, the first side of drying bin is connected with the first side of drying bin, the inside of second vibration layer, the first side is provided with the first side of drying bin, the inside is connected with the first side of drying bin, and the first side is connected with the first side of the first vibration bin.
Preferably, the top of extracting the storehouse is provided with the installation storehouse, and the top of extracting the storehouse is located the both sides of installation storehouse and all is connected with the feed inlet, first motor, first action wheel and first follow driving wheel all are located the inside of installation storehouse, and first follow driving wheel passes through the bearing and rotates with the installation storehouse and be connected.
Preferably, the outside of first action wheel and first follow driving wheel all is provided with the belt, and first action wheel passes through the belt rotation with first follow driving wheel and be connected, the inside of drawing the storehouse is located the both sides of baffle and all is provided with the arm-tie, first discharge pipe is located the arm-tie bottom.
Preferably, the output end of the second motor penetrates through the extraction bin and extends to the inside of the extraction bin, the number of the second motors is two, the funnel is rotationally connected with the extraction bin through the second motor, the washing pipe penetrates through the extraction bin and extends to the inside of the extraction bin, and a clamping block is connected between the washing pipe and the extraction bin.
Preferably, the filter screen runs through the extraction bin and extends to the inside of the second discharge pipe, a spring is connected between the filter screen and the first guide plate, the second discharge pipe runs through the extraction bin and extends to the outside of the second discharge pipe, and a clamping block is arranged between the second discharge pipe and the extraction bin.
Preferably, the outer side of the inner barrel is provided with a sliding block above the teeth, the inner side of the outer barrel is provided with a sliding groove matched with the sliding block, and the outer barrel is rotationally connected with the inner barrel through the sliding block and the sliding groove.
Preferably, the teeth are meshed with the gears, the outer sides of the second driving wheel and the second driven wheel are connected with belts, the second driving wheel and the second driven wheel are connected through the belts in a rotating mode, the bottom end of the inner barrel is connected with a discharging pipe, the outer side of the discharging pipe is connected with a valve, and a bearing is arranged between the inner barrel and the discharging pipe.
Preferably, the gas chromatograph is installed to the bottom of drawing the storehouse, the third motor is located the top of gas chromatograph, the outside of drawing the storehouse is provided with the maintenance door, and the maintenance door passes through the hinge rotation with drawing the storehouse and be connected, the outside of maintenance door is connected with the handle.
Preferably, one side of the drying bin is connected with an exhaust pipe, the outer side of the exhaust pipe is connected with a valve, the outer side of the ingress pipe is connected with a valve, the ingress pipe penetrates through the extraction bin and extends to the inside of the extraction bin, and the ingress pipe is located above the inner barrel.
Preferably, the method comprises the following steps:
step one: when the device is used, an external power supply is required to be connected, the external power supply provides electric energy for the device, so that the device can normally operate, firstly, sampling raw materials, anhydrous sodium sulfate, ethyl acetate, normal raw materials, anhydrous sodium sulfate and ethyl acetate are simultaneously put into the extraction bin through different feed inlets, and because of the existence of the partition plate, the sampling raw materials and the normal raw materials can be in different spaces, respectively start purification tests, one is a normal test, and the other is a blank test;
step two: after normal raw materials of sampling raw materials respectively enter two sides of a partition plate, a first motor can be started, the first motor drives a first driving wheel to rotate, the first driving wheel and the first driving wheel simultaneously rotate to drive two groups of crushing paddles to crush materials due to the existence of a belt, after crushing is finished, a valve on the outer side of a first discharge pipe can be opened, the materials enter the interior of the funnel, after the materials enter the funnel, anhydrous sodium sulfate is placed in advance in the interior of the funnel, extracting solution in the materials can enter the interior of an inner barrel through the funnel containing the anhydrous sodium sulfate, and enters the interior of an inner barrel through a filter screen, a first guide plate and a second guide plate and then through an opened second control valve, after the extracting solution is prepared, residual material residues are left in the interior of the funnel, ethyl acetate is poured into the interior of the funnel through a washing pipe, after the materials are washed through the filter screen, enter the interior of the first guide plate and then enter the interior of a second discharge pipe through an opened first control valve, and are discharged by the second discharge pipe, at the moment, the second control valve is in a closed state, and then ethyl acetate is introduced again for secondary washing according to the washing process;
step three: after washing is finished, the second motor can be started, the second motor drives the funnel to rotate, materials in the funnel are poured out onto the filter screen, the filter screen cannot be passed through because the materials are solid, the first vibration motor is started at the moment, the first vibration motor drives the filter screen to vibrate, so that the materials are moved out of the interior of the extraction bin, the materials enter the drying bin, a heating layer in the drying bin is started, the fourth motor is started, the heating layer heats and dries the materials, the stirring paddle can be driven to rotate in the drying bin after the fourth motor is started, the drying speed of the materials is accelerated, and the second vibration motor is started again after the materials are dried, so that the materials enter the interior of the inner barrel through the ingress pipe;
step four: starting a third motor, driving a second driving wheel by the third motor to rotate, driving a second driven wheel to rotate by a belt by the second driving wheel, driving two groups of gears to rotate, and driving an inner barrel to rotate in an outer barrel by the teeth because the gears are meshed with the teeth.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the parts such as the extraction bin, the first motor, the crushing paddle, the funnel, the second motor, the washing pipe, the filter screen, the first vibrating motor, the first guide plate, the first control valve and the like, the automation of the extraction and purification of samples is realized, an operator only needs to input sampling raw materials into the feed inlet, and a series of operations of the extraction and purification lamp can be completed by the device until the extracted and purified materials enter the gas chromatograph for detection, so that the manual operation is reduced, the detection efficiency is improved, and the labor intensity is lightened.
2. According to the invention, through the extraction bin and the partition plate, the partition plate is used for dividing the extraction bin into two experimental spaces, and the sampling raw materials and the normal raw materials can be tested together at the same time, so that a blank test is not needed, the total time required by detection is shortened, and the extraction and purification comparison are more obvious together, so that the test result is clear at a glance.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic view of a funnel connection structure according to the present invention;
FIG. 4 is an enlarged view of the structure at A of the present invention;
fig. 5 is a schematic view of the inner tub structure of the present invention.
In the figure: 1. an extraction bin; 2. a partition plate; 3. a first motor; 4. a first drive wheel; 5. a first driven wheel; 6. crushing paddles; 7. a first discharge pipe; 8. a funnel; 9. a second motor; 10. a washing tube; 11. a filter screen; 12. a first vibration motor; 13. a first deflector; 14. a first control valve; 15. a second discharge pipe; 16. a second deflector; 17. a second control valve; 18. an outer tub; 19. an inner barrel; 20. teeth; 21. a gear; 22. a second driving wheel; 23. a second driven wheel; 24. a third motor; 25. a drying bin; 26. a heating layer; 27. a fourth motor; 28. stirring paddles; 29. a second vibration motor; 30. and an ingress pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "configured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Hereinafter, an embodiment of the present invention will be described in accordance with its entire structure.
Referring to fig. 1-5, a device and a method for detecting residues of agricultural and veterinary drugs in food comprise an extraction bin 1, wherein a baffle plate 2 is arranged in the extraction bin 1, a first motor 3 is arranged at the top end of the extraction bin 1, the output end of the first motor 3 is connected with a first driving wheel 4, one side of the first driving wheel 4 is connected with a first driven wheel 5, the bottom ends of the first driving wheel 4 and the first driven wheel 5 are both connected with a crushing paddle 6, a first discharge pipe 7 is arranged at the bottom end of the crushing paddle 6 in the extraction bin 1, a funnel 8 is connected below the first discharge pipe 7, a second motor 9 is arranged at one side of the funnel 8, a washing pipe 10 is arranged at one side above the funnel 8, a filter screen 11 is arranged below the funnel 8, a first vibration motor 12 is arranged at one side of the filter screen 11, a first guide plate 13 is arranged below the filter screen 11, the bottom end of the first guide plate 13 is connected with a first control valve 14, the bottom end of the first control valve 14 is connected with a second discharge pipe 15, a second guide plate 16 is arranged below the first guide plate 13, the bottom end of the second guide plate 16 is connected with a second control valve 17, an outer barrel 18 is arranged below the second control valve 17, an inner barrel 19 is connected inside the outer barrel 18, teeth 20 are arranged on the outer side of the inner barrel 19, one side of the teeth 20 is connected with a gear 21, the bottom end of the gear 21 is connected with a second driving wheel 22, one side of the second driving wheel 22 is connected with a second driven wheel 23, a third motor 24 is arranged at the bottom end of the second driving wheel 22, drying bins 25 are connected to two sides of the extraction bin 1, a heating layer 26 is arranged inside the drying bins 25, a fourth motor 27 is arranged at one side of the heating layer 26, the output end of the fourth motor 27 is connected with a stirring paddle 28, a second vibration motor 29 is arranged at the bottom end of the drying bins 25, and one side of the drying bin 25 is connected with an introduction pipe 30.
According to the invention, through the parts such as the extraction bin 1, the first motor 3, the crushing paddle 6, the funnel 8, the second motor 9, the washing pipe 10, the filter screen 11, the first vibration motor 12, the first guide plate 13, the first control valve 14 and the like, the automation of the extraction and purification of samples is realized, an operator can finish a series of operations such as the extraction and purification by the device only by throwing the sampling raw materials into the feed inlet until the extracted and purified materials enter the gas chromatograph for detection, the manual operation is reduced, the detection efficiency is improved, and the labor intensity is lightened.
Referring to fig. 2, the top of the extracting bin 1 is provided with an installing bin, two sides of the top of the extracting bin 1, which are located at the installing bin, are connected with feeding ports, the first motor 3, the first driving wheel 4 and the first driven wheel 5 are located inside the installing bin, the first driven wheel 5 is rotationally connected with the installing bin through bearings, the top of the feeding port is provided with a sealing cover, and the sealing cover is rotationally connected with the feeding port.
Referring to fig. 2, the outer sides of the first driving wheel 4 and the first driven wheel 5 are respectively provided with a belt, the first driving wheel 4 and the first driven wheel 5 are rotatably connected through the belts, two sides of the inside of the extraction bin 1, which are positioned on the partition board 2, are respectively provided with a support plate, the first discharge pipe 7 is positioned at the bottom end of the support plate, the support plates divide the inner space of the extraction bin 1, the outer sides of the first discharge pipe 7 are connected with a control valve, the control valve is an electromagnetic valve, and the control valve is electrically connected with a device overall controller.
Referring to fig. 2 and 3, the output end of the second motor 9 penetrates through the extraction bin 1 and extends to the inside thereof, the number of the second motors 9 is two, the funnel 8 and the extraction bin 1 are rotationally connected through the second motor 9, the washing pipe 10 penetrates through the extraction bin 1 and extends to the inside thereof, a clamping block is connected between the washing pipe 10 and the extraction bin 1, and one end of the washing pipe 10 is connected with a metering pump for transporting the acetic acid ethanol.
Referring to fig. 2 and 4, the filter screen 11 penetrates through the extraction bin 1 and extends to the inside of the second discharge pipe 15, a spring is connected between the filter screen 11 and the first guide plate 13, the second discharge pipe 15 penetrates through the extraction bin 1 and extends to the outside thereof, a clamping block is arranged between the second discharge pipe 15 and the extraction bin 1, and the second discharge pipe 15 can discharge the liquid washed by the acetic acid ethanol, belongs to waste liquid, and needs to be collected and then concentrated.
Referring to fig. 2 and 5, a sliding block is disposed above the teeth 20 on the outer side of the inner barrel 19, a sliding groove matched with the sliding block is disposed on the inner side of the outer barrel 18, the outer barrel 18 and the inner barrel 19 are rotatably connected through the sliding block and the sliding groove, and the sliding block and the sliding groove can assist the inner barrel 19 to rotate inside the outer barrel 18, so that the inner barrel 19 rotates more smoothly.
Referring to fig. 2 and 5, the teeth 20 are meshed with the gear 21, the outer sides of the second driving wheel 22 and the second driven wheel 23 are connected with a belt, the second driving wheel 22 and the second driven wheel 23 are rotatably connected through the belt, the bottom end of the inner barrel 19 is connected with a discharging pipe, the outer side of the discharging pipe is connected with a valve, and a bearing is arranged between the inner barrel 19 and the discharging pipe, so that the discharging pipe at the bottom end can not rotate when the inner barrel 19 rotates, and leakage of materials is avoided.
Referring to fig. 1, a gas chromatograph is installed at the bottom end of the extraction bin 1, a third motor 24 is located above the gas chromatograph, a maintenance door is arranged on the outer side of the extraction bin 1 and is rotationally connected with the extraction bin 1 through a hinge, a handle is connected on the outer side of the maintenance door, anhydrous sodium sulfate used for an experiment can be placed after the maintenance door is opened, the anhydrous sodium sulfate is placed to be ready for operation before the experiment, and manual completion is needed.
Referring to fig. 2, an exhaust pipe is connected to one side of the drying bin 25, a valve is connected to an outer side of the exhaust pipe, a valve is connected to an outer side of the ingress pipe 30, the ingress pipe 30 penetrates through the extracting bin 1 and extends to an inner side of the ingress pipe, the ingress pipe 30 is located above the inner barrel 19, and the heating layer 26 is heated to avoid excessive pressure inside the drying bin, so that the valve at the outer side of the exhaust pipe can be opened, and explosion of the interior of the drying bin 25 due to excessive pressure is avoided.
Please refer to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, which include the following steps:
step one: when the device is used, an external power supply is required to be connected, the external power supply provides electric energy for the device, so that the device can normally operate, firstly, sampling raw materials, anhydrous sodium sulfate, ethyl acetate, normal raw materials, anhydrous sodium sulfate and ethyl acetate are simultaneously put into the extraction bin 1 through different feed inlets, and because the sampling raw materials and the normal raw materials are in different spaces through the partition plate 2, the purification test is started respectively, one is the normal test, and the other is the blank test;
step two: after normal raw materials of sampling raw materials respectively enter two sides of a partition board 2, a first motor 3 can be started, the first motor 3 drives a first driving wheel 4 to rotate, due to the existence of a belt, a first driven wheel 5 also starts to rotate, the first driving wheel 4 and the first driven wheel 5 simultaneously rotate to drive two groups of crushing paddles 6 to crush materials, after crushing, a valve on the outer side of a first discharge pipe 7 can be opened, the materials enter the interior of a funnel 8, after the materials enter the funnel 8, anhydrous sodium sulfate is placed in the interior of the funnel 8 in advance, so that extracting solution in the materials can enter the interior of an inner barrel 19 through the funnel 8 filled with the anhydrous sodium sulfate, and enters the interior of a second discharge pipe 19 through a filter screen 11, a first guide plate 13 and a second guide plate 16, and then enters the interior of the inner barrel 19 through an opened second control valve 17, after the extracting solution is prepared, the interior of the funnel 8 is filled with ethyl acetate through a washing pipe 10, after the materials are washed, the materials enter the interior of the first guide plate 13 through the first control valve 14 which is opened, the interior of the funnel 8 is then enters the second discharge pipe 15 through the second control valve 15 which is closed again, and the second discharge pipe is closed again according to a washing process;
step three: after the washing is finished, the second motor 9 can be started, the second motor 9 drives the hopper 8 to rotate, the material in the hopper 8 is poured out onto the filter screen 11, the filter screen 11 cannot be passed through because the material is solid, the first vibration motor 12 is started at the moment, the first vibration motor 12 drives the filter screen 11 to vibrate, so that the material is moved out of the interior of the extraction bin 1, the material enters the drying bin 25, the heating layer 26 in the drying bin 25 is started, the fourth motor 27 is started, the heating layer 26 heats and dries the material, the stirring paddle 28 is driven to rotate in the drying bin 25 after the fourth motor 27 is started, the drying speed of the material is accelerated, and the second vibration motor 29 is started after the material is dried, so that the material enters the interior of the inner barrel 19 through the ingress pipe 30;
step four: the third motor 24 is started, the third motor 24 drives the second driving wheel 22 to rotate, the second driving wheel 22 drives the second driven wheel 23 to rotate through a belt, so that two groups of gears 21 are driven to rotate, because the gears 21 are meshed with the teeth 20, the teeth 20 can drive the inner barrel 19 to rotate in the outer barrel 18, the inner barrel 19 rotates more smoothly in the outer barrel 18 due to the matching of the sliding block and the sliding chute, the inner barrel 19 rotates to enable materials and extracting solutions in the inner barrel to be mixed, after the mixing is finished, a valve on the outer side of the discharge pipe can be opened, then sampling raw materials and normal raw materials enter a gas chromatograph together to be detected, the sampling raw materials and the normal raw materials are separated into two experimental spaces by the arranged extraction bin 1 and the separation plate 2, the sampling raw materials and the normal raw materials can be tested together, so that a blank test is not needed, the total time required by detection is shortened, extraction and purification comparison is more obvious together, and the test result is clear at a glance.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides a detection device is remained to agricultural and veterinary medicine in food, includes draws storehouse (1), its characterized in that: the inside that draws storehouse (1) is provided with baffle (2), and draws the top of storehouse (1) and install first motor (3), the output of first motor (3) is connected with first action wheel (4), and one side of first action wheel (4) is connected with first driving wheel (5), the bottom of first action wheel (4) and first driving wheel (5) all is connected with crushing oar (6), the inside that draws storehouse (1) is located the bottom of crushing oar (6) is provided with first discharge pipe (7), and the below of first discharge pipe (7) is connected with funnel (8), second motor (9) are installed to one side of funnel (8), and one side of funnel (8) top is provided with wash pipe (10), the below of funnel (8) is provided with filter screen (11), and one side of filter screen (11) is installed first vibrating motor (12), the below of filter screen (11) is provided with first guide plate (13), and the bottom of first guide plate (13) is connected with first control valve (14), the bottom of first guide plate (16) is connected with second guide plate (16), the bottom of second guide plate (16) is connected with second guide plate (16), the lower part of the second control valve (17) is provided with an outer barrel (18), the inside of the outer barrel (18) is connected with an inner barrel (19), the outside of the inner barrel (19) is provided with a tooth (20), one side of the tooth (20) is connected with a gear (21), the bottom end of the gear (21) is connected with a second driving wheel (22), one side of the second driving wheel (22) is connected with a second driven wheel (23), the bottom end of the second driving wheel (22) is provided with a third motor (24), both sides of the extraction bin (1) are connected with a drying bin (25), the inside of the drying bin (25) is provided with a heating layer (26), one side of the heating layer (26) is provided with a fourth motor (27), the output end of the fourth motor (27) is connected with a stirring paddle (28), the bottom end of the drying bin (25) is provided with a second vibration motor (29), one side of the drying bin (25) is connected with an ingress pipe, one side of the drying bin (25) is connected with an exhaust pipe, the outside of the exhaust pipe is connected with the valve (30), the outside of the exhaust pipe (30) is connected with the drying bin (30), and extends into the drying bin (19) and is positioned in the drying bin (30), the filter screen (11) runs through and draws inside of storehouse (1) and extend to second discharge pipe (15), be connected with the spring between filter screen (11) and first guide plate (13), second discharge pipe (15) runs through and draws storehouse (1) and extend to its outside, and be provided with the fixture block between second discharge pipe (15) and the storehouse (1) of drawing, the outside of interior bucket (19) is located the top of tooth (20) and is provided with the slider, the inboard of outer bucket (18) is provided with the spout with slider assorted, and outer bucket (18) are connected through slider and spout rotation with interior bucket (19), tooth (20) and gear (21) mesh, the outside of second action wheel (22) and second follow driving wheel (23) all are connected with the belt, the bottom of interior bucket (19) is connected with row material pipe, and the outside of row material pipe is connected with the valve, be provided with between interior bucket (19) and row material pipe, this food residue detection method includes the step is left in the below with the food, and the detection method of detecting:
step one: when the device is used, an external power supply is required to be connected, the external power supply provides electric energy for the device, so that the device can normally operate, firstly, sampling raw materials, anhydrous sodium sulfate, ethyl acetate, normal raw materials, anhydrous sodium sulfate and ethyl acetate are simultaneously put into the extraction bin (1) through different feed inlets, and the sampling raw materials and the normal raw materials can be in different spaces respectively for starting a purification test, wherein one is a normal test, and the other is a blank test due to the existence of the partition plate (2);
step two: after normal raw materials of sampling raw materials respectively enter two sides of a partition plate (2), a first motor (3) can be started, the first motor (3) drives a first driving wheel (4) to rotate, due to the existence of a belt, a first driven wheel (5) also starts to rotate, the first driving wheel (4) and the first driven wheel (5) simultaneously rotate to drive two groups of crushing paddles (6) to crush materials, after crushing, a valve at the outer side of a first discharge pipe (7) can be opened, the materials enter the interior of the funnel (8), after the materials enter the funnel (8), anhydrous sodium sulfate is placed in the interior of the funnel (8) in advance, so that extracting solution in the materials can enter the interior of an inner barrel (19) through a filter screen (11), a first guide plate (13) and a second guide plate (16) through an opened second control valve (17), after the extracting solution is prepared, the interior of the funnel (8) is also provided with residual material residues, ethyl acetate is filled into the interior of the funnel (8) through a washing pipe (10), the material is washed, the material enters the interior of the funnel (8) through the first guide plate (13) and then enters the interior of the second discharge pipe (15) through the first guide plate (15) and enters the interior of the second guide plate (15) after the first guide plate (13), at the moment, the second control valve (17) is in a closed state, and then ethyl acetate is introduced again according to the washing process to carry out secondary washing;
step three: after washing is finished, the second motor (9) can be started, the second motor (9) drives the funnel (8) to rotate, materials in the funnel (8) are poured out onto the filter screen (11), the materials are solid, so that the materials cannot pass through the filter screen (11), the first vibration motor (12) is started at the moment, the first vibration motor (12) drives the filter screen (11) to vibrate, so that the materials are moved out of the interior of the extraction bin (1), the materials enter the drying bin (25), the heating layer (26) in the drying bin (25) is started, the fourth motor (27) is started, the heating layer (26) heats and dries the materials, the stirring paddle (28) is driven to rotate in the drying bin (25) after the fourth motor (27) is started, the drying speed of the materials is accelerated, and the second vibration motor (29) is started again after the materials are dried, so that the materials enter the interior of the inner barrel (19) through the inlet pipe (30);
step four: starting a third motor (24), driving a second driving wheel (22) to rotate by the third motor (24), driving a second driven wheel (23) to rotate by the second driving wheel (22) through a belt, and driving two groups of gears (21) to rotate, wherein the gears (21) are meshed with the teeth (20), so that the teeth (20) can drive an inner barrel (19) to rotate in the outer barrel (18), and the inner barrel (19) rotates in the outer barrel (18) smoothly due to the matching of a sliding block and a sliding groove, the rotation of the inner barrel (19) can enable materials and extracting solutions in the inner barrel to be mixed, a valve on the outer side of a discharging pipe can be opened after the mixing is completed, and then sampling raw materials and normal raw materials enter a gas chromatograph together for detection.
2. The device for detecting residues of agricultural and veterinary drugs in foods according to claim 1, wherein: the top of draw storehouse (1) is provided with the installation storehouse, and draws the both sides that the top of storehouse (1) is located the installation storehouse all to be connected with the feed inlet, first motor (3), first action wheel (4) and first follow driving wheel (5) all are located the inside of installation storehouse, and first follow driving wheel (5) are connected with the installation storehouse rotation through the bearing.
3. The device for detecting residues of agricultural and veterinary drugs in foods according to claim 1, wherein: the utility model discloses a draw storehouse, including baffle (2), first action wheel (4) and first follow driving wheel (5), the outside of first action wheel (4) and first follow driving wheel (5) all is provided with the belt, and first action wheel (4) are connected through the belt rotation with first follow driving wheel (5), the inside of drawing the storehouse (1) is located both sides of baffle (2) all and is provided with the arm-plate, first discharge pipe (7) are located the arm-plate bottom.
4. The device for detecting residues of agricultural and veterinary drugs in foods according to claim 1, wherein: the output of second motor (9) runs through and draws storehouse (1) and extends to its inside, and the quantity of second motor (9) is two sets of, funnel (8) are connected through second motor (9) rotation with draw storehouse (1), wash pipe (10) run through draw storehouse (1) and extend to its inside, and be connected with the fixture block between wash pipe (10) and the draw storehouse (1).
5. The device for detecting residues of agricultural and veterinary drugs in foods according to claim 1, wherein: the gas chromatograph is installed to the bottom of drawing storehouse (1), third motor (24) are located the top of gas chromatograph, the outside of drawing storehouse (1) is provided with the maintenance door, and the maintenance door passes through the hinge rotation with draw storehouse (1) and be connected, the outside of maintenance door is connected with the handle.
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| US10241014B2 (en) * | 2017-07-10 | 2019-03-26 | Cem Corporation | Instrument for analytical sample preparation |
| CN207042365U (en) * | 2017-07-25 | 2018-02-27 | 安徽康坶国际化肥股份有限公司 | A kind of composite fertilizer's agitating device |
| CN107941559A (en) * | 2017-10-16 | 2018-04-20 | 百奥森（江苏）食品安全科技有限公司 | A kind of food security sampling Detection equipment |
| CN207439787U (en) * | 2017-12-08 | 2018-06-01 | 台州智子科技有限公司 | A kind of food pesticide detection device for fruit detection |
| CN208476902U (en) * | 2018-06-06 | 2019-02-05 | 黔南民族师范学院 | A kind of detection of agricultural products device |
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