CN109738498B - Preservative detection device in cooked food - Google Patents
Preservative detection device in cooked food Download PDFInfo
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- CN109738498B CN109738498B CN201910171820.XA CN201910171820A CN109738498B CN 109738498 B CN109738498 B CN 109738498B CN 201910171820 A CN201910171820 A CN 201910171820A CN 109738498 B CN109738498 B CN 109738498B
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- 238000001514 detection method Methods 0.000 title claims abstract description 62
- 239000003755 preservative agent Substances 0.000 title claims abstract description 20
- 230000002335 preservative effect Effects 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 50
- 238000002347 injection Methods 0.000 claims abstract description 31
- 239000007924 injection Substances 0.000 claims abstract description 31
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 17
- 238000005070 sampling Methods 0.000 claims abstract description 8
- 238000005192 partition Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 238000000835 electrochemical detection Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 239000005452 food preservative Substances 0.000 description 3
- 235000019249 food preservative Nutrition 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000004809 thin layer chromatography Methods 0.000 description 1
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Abstract
The invention discloses a preservative detection device in cooked food, which comprises a lower treatment chamber and an upper detection chamber, wherein the treatment chamber comprises a sample seat and a sampling assembly, and the sample seat is provided with three heatable sample tubes; the sampling component comprises a liquid taking pipe and a peristaltic pump, the detection chamber comprises a liquid transferring component and a detection component, the liquid transferring component comprises a vacuum pipe and an injection pipe, the injection pipe is vertically arranged in the vacuum pipe, the detection component comprises an electromagnet, an armature, a motor and an electrode disc, the armature is positioned right above the electromagnet, the motor is fixedly arranged on the upper surface of the armature, the electrode disc is arranged right above the motor, and three electrode columns are arranged on the electrode disc. According to the invention, the sample is heated by using the sample seat before detection, and the sample is uniformly mixed by using the rotor, so that detection errors caused by uneven temperature and concentration can be avoided. The detection assembly provides a vacuum environment for electrochemical detection, and can improve the detection effect.
Description
Technical Field
The invention relates to the field of preservative detection devices, in particular to a preservative detection device in cooked food.
Background
Food preservatives are agents that inhibit spoilage of substances. Food preservatives are agents that have a sustained inhibitory effect on the growth of microorganisms that metabolize substrates that are spoilage products. It can inhibit the occurrence of the most perishable action under different conditions, and has a lasting effect especially when the general sterilization action is insufficient. Food containing preservatives or with the content of the preservatives exceeding the standard is excessively eaten to cause certain damage to human bodies. Common methods for detecting the preservative comprise a volumetric method, a spectrophotometry method, a thin-layer chromatography method, a high-performance liquid chromatography method and an electrochemical detection method, the electrochemical detection method is quick, simple and high in accuracy, but a detection electrode in the electrochemical detection is easy to react with media such as air and the like, the service life and the detection accuracy can be reduced, the application of the electrochemical detection is limited, and when a common preservative detection device detects the preservative, the temperature of a sample is not effectively controlled, and a detection result error can be caused. Therefore, a device capable of rapidly and simply detecting food preservatives is needed.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
It is still another object of the present invention to provide a preservative detection device in cooked food. According to the invention, the sample is heated by using the sample seat before detection, and the sample is uniformly mixed by using the rotor, so that detection errors caused by uneven temperature and concentration can be avoided. The detection assembly provides a vacuum environment for electrochemical detection, and can improve the detection effect.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a preservative detection device in cooked food, comprising:
a box body, the interior of which is horizontally clamped with a clapboard to divide the box body into a processing chamber positioned at the lower part and a detection chamber positioned at the upper part,
the treatment chamber comprises a sample inlet, a slide rail, a sample seat and a sampling assembly, wherein the sample inlet is arranged on the side wall of the treatment chamber, the slide rail is in a bar shape and is horizontally arranged at the bottom of the treatment chamber, one end of the slide rail is right opposite to the sample inlet, a baffle is vertically arranged at the end part of the other end of the slide rail, two slide blocks are arranged on the slide rail at intervals, the sample seat is positioned right above the slide rail, the bottom end of the sample seat is fixedly connected with the two slide blocks simultaneously, three vertical blind holes are formed at the top end of the sample seat at intervals and are parallel to the length direction of the slide rail and are arranged side by side, a rotor is arranged at the bottom of each blind hole, a sample tube is coaxially arranged in each blind hole, the top end of the sample tube is connected with the hole opening of the blind hole through a bearing, the bottom end of the sample tube is fixedly, a gap is formed between the outer pipe and the inner pipe, a plurality of heating sheets connected with an external power supply are arranged in the gap, and the inner pipe is made of heat-conducting silicone grease; the sampling assembly comprises a first electric telescopic rod, a fixing plate, three liquid taking pipes and three micro peristaltic pumps, the first electric telescopic rod is vertically arranged on the lower surface of the partition plate, the fixing plate is horizontally arranged and fixedly connected with the movable end of the first electric telescopic rod, the three liquid taking pipes are respectively vertically arranged on the lower surface of the fixing plate, one liquid taking pipe is positioned right above one sample pipe, the bottom end of each liquid taking pipe is provided with a liquid taking port, and one end of a pump pipe of one micro peristaltic pump is communicated with the top end of one liquid taking pipe;
the detection chamber comprises a liquid transfer assembly and a detection assembly, the operation port is arranged on the side wall of the detection chamber, the liquid transfer assembly comprises a vacuum tube and an injection tube, the top end of the vacuum tube is fixedly arranged at the top of the detection chamber, the bottom end of the vacuum tube is open, an air suction port is arranged on the side wall of the vacuum tube, the air suction port is communicated with an air suction pump, and the air suction pump is arranged on the partition plate; the injection tube is vertically arranged in the vacuum tube, the top end of the injection tube is fixedly connected with the top of the detection chamber, a second electric telescopic rod and a piston are arranged in the injection tube, the second electric telescopic rod is vertically and fixedly arranged at the top end of the injection tube, the piston is fixedly arranged at the movable end of the second electric telescopic rod, a liquid outlet is arranged at the bottom end of the injection tube, three liquid inlets are formed in the side wall of the injection tube, and the three liquid outlets are all at the same horizontal height; the detection assembly comprises a support column, an electromagnet, an armature, a motor and an electrode disc, the support column is hollow and vertically arranged on the partition plate, the electromagnet is vertically arranged at the bottom end of the support column, the armature is positioned right above the electromagnet, a spring is vertically and fixedly arranged between the armature and the electromagnet, the motor is a stepping motor and is fixedly arranged on the upper surface of the armature, and the electrode disc is horizontally arranged right above the motor and coaxially sleeved on an output shaft of the motor; the electrode disc comprises an electrode disc, an electrode plate and an annular clamping groove, wherein three vertical electrode columns are arranged on the upper surface of the electrode disc at intervals close to the edge of the upper surface of the electrode disc, an electrode groove and the annular clamping groove are formed in the upper surface of one electrode column, electrode plates for detection are placed in the electrode groove, and the annular clamping groove is formed in the periphery of the electrode groove; when the electromagnet is powered off, the length of the spring is the largest, and the annular clamping groove is in contact with the bottom end of the vacuum tube; when the electromagnet is electrified, the length of the spring is minimum, and the annular clamping groove is separated from the bottom end of the vacuum tube;
the other end of a pump pipe of one micro peristaltic pump sequentially penetrates through the fixing plate, the partition plate and the side wall of the vacuum pipe and then is communicated with a liquid inlet.
Preferably, the edge of the bottom end of the vacuum tube is provided with a circle of airtight sleeve, and the airtight sleeve is made of rubber.
Preferably, the rotation speed of the rotor is 60 r/min.
Preferably, the pump pipe of the micro peristaltic pump is a hose made of low-density high-pressure polyethylene.
Preferably, the length of the first electric telescopic rod when the first electric telescopic rod extends to the limit is 10cm, and the length of the first electric telescopic rod when the first electric telescopic rod shortens to the limit is 2 cm.
Preferably, the three electrode columns are arranged in a central symmetry with respect to the center of the electrode disk.
The invention at least comprises the following beneficial effects:
firstly, the invention heats the sample by using the sample seat before detection and uniformly mixes the sample by using the rotor, thereby avoiding detection errors caused by uneven temperature and concentration.
Secondly, the detection assembly provides a vacuum environment for electrochemical detection, so that the detection effect of the device can be improved, and errors can be reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic overall structure diagram of one technical scheme of the invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can practice the invention with reference to the description.
As shown in fig. 1, the preservative detection apparatus in cooked food comprises:
a box body 1, the interior of which is horizontally clamped with a clapboard 2 to divide the box body 1 into a processing chamber 3 positioned at the lower part and a detection chamber 4 positioned at the upper part, wherein,
the processing chamber 3 comprises a sample inlet 310, a slide rail 320, a sample holder 330 and a sampling assembly 340, wherein the sample inlet 310 is arranged on the side wall of the processing chamber 3, the slide rail 320 is strip-shaped and is horizontally arranged at the bottom of the processing chamber 3, one end of the slide rail 320 is arranged right opposite to the sample inlet 310, a baffle 321 is vertically arranged at the end part of the other end of the slide rail 320, two sliders 322 are arranged on the slide rail 320 at intervals, the sample holder 330 is positioned right above the slide rail 320, the bottom end of the sample holder 330 is fixedly connected with the two sliders 332 at the same time, three vertical blind holes are arranged at intervals at the top end of the sample holder 330, the three blind holes are arranged side by side in parallel to the length direction of the slide rail 320, a rotor 331 is arranged at the bottom of each blind hole, a sample tube 332 is coaxially arranged in each blind hole, the top end of the sample tube 332 is connected with the orifice, a gap is formed between the outer tube and the inner tube, a plurality of heating sheets 333 connected with an external power supply are arranged in the gap, and the inner tube is made of heat-conducting silicone grease; the sampling assembly 340 comprises a first electric telescopic rod 341, a fixing plate 342, three liquid taking pipes 343 and three micro peristaltic pumps 344, wherein the first electric telescopic rod 341 is vertically arranged on the lower surface of the partition plate 2, the fixing plate 342 is horizontally arranged and fixedly connected with the movable end of the first electric telescopic rod 341, the three liquid taking pipes 343 are respectively vertically arranged on the lower surface of the fixing plate 342, one liquid taking pipe 343 is positioned right above one sample pipe 332, the bottom end of each liquid taking pipe 343 is provided with a liquid taking port, and one end of a pump pipe of one micro peristaltic pump 344 is communicated with the top end of one liquid taking pipe 343;
the detection chamber 4 comprises a liquid-transfering component 410 and a detection component 420, the operation port 430 is arranged on the side wall of the detection chamber 4, the liquid-transfering component 410 comprises a vacuum tube 411 and an injection tube 412, the top end of the vacuum tube 411 is fixedly arranged at the top part and the bottom end of the detection chamber 4 is open, the side wall of the vacuum tube 411 is provided with an air suction port, the air suction port is communicated with the air suction pump 430, and the air suction pump 430 is arranged on the partition plate 2; the injection tube 412 is vertically arranged in the vacuum tube 411, the top end of the injection tube 412 is fixedly connected with the top of the detection chamber 4, a second electric telescopic rod 413 and a piston 414 are arranged in the injection tube 412, the second electric telescopic rod 413 is vertically and fixedly arranged at the top end of the injection tube 412, the piston 414 is fixedly arranged at the movable end of the second electric telescopic rod 413, a liquid outlet is arranged at the bottom end of the injection tube 412, three liquid inlets are formed in the side wall of the injection tube 412, and the three liquid outlets are all at the same horizontal height (the three liquid inlets are always positioned below the piston 414); the detection assembly 420 comprises a supporting column 421, an electromagnet 422, an armature 423, a motor 424 and an electrode disc 425, wherein the supporting column 421 is hollow and vertically arranged on the partition board 2, the electromagnet 422 is vertically arranged at the bottom end of the supporting column 421, the armature 423 is positioned right above the electromagnet 422, a spring 426 is vertically and fixedly arranged between the armature 423 and the electromagnet 422, the motor 424 is a stepping motor and is fixedly arranged on the upper surface of the armature 423, and the electrode disc 425 is horizontally arranged right above the motor 424 and coaxially sleeved on an output shaft of the motor 424; three vertical electrode columns 427 are arranged on the upper surface of the electrode disk 425 close to the edge of the upper surface at intervals, an electrode groove 428 and an annular clamping groove 429 are arranged on the upper surface of one electrode column 427, an electrode plate for detection is placed in the electrode groove 428, and the annular clamping groove 429 is arranged on the periphery of the electrode groove 428; when the electromagnet 422 is powered off, the length of the spring 426 is the largest, and the annular clamping groove 429 is in contact with the bottom end of the vacuum tube 411; when the electromagnet 422 is energized, the length of the spring 426 is minimum, and the annular clamping groove 429 is separated from the bottom end of the vacuum tube 411;
wherein, the other end of the pump tube of a micro peristaltic pump 344 is communicated with a liquid inlet after sequentially penetrating through the side walls of the fixing plate 342, the partition plate 2 and the vacuum tube 411.
When the detection device is used, the device for detecting the preservative in cooked food is electrified, the electromagnet 422 is electrified to attract the armature 423, the electrode disc 425 descends, the motor 424 rotates the electrode column 427 to be detected to the operation opening 430, and the electrode slice is placed in the electrode groove 428. After the motor 424 rotates the electrode column 427 with the electrode plate to the position right below the vacuum tube 411, the electromagnet 422 is powered off, the spring 426 resets and simultaneously pushes the armature 423 to move upwards, and the bottom end of the vacuum tube 411 is embedded into the annular clamping groove 429 on the electrode column 427, and then the air pump 430 starts to vacuumize the interior of the vacuum tube 411. After the electrode sheet is placed in the electrode groove 428, the solution to be detected is poured into two of the sample tubes 332, and water is added into the other sample tube 332. The sample holder 330 is pushed in until the sample holder 330 is attached to the baffle 321, the heating sheet 333 starts to generate heat, after the rotor 331 starts to rotate after a period of heating, the first electric telescopic rod 341 extends and drives the fixing plate 342 and the three liquid taking tubes 343 to descend simultaneously until the liquid taking ports of the liquid taking tubes 343 are immersed into the sample tubes 332. The micro peristaltic pump 344 connected with the liquid taking pipe 343 extending into the first solution to be detected conveys the first solution to be detected into the injection pipe 412, the second electric telescopic rod 413 extends and pushes the piston 414 downwards, the solution to be detected drops on the electrode plate through the liquid outlet at the bottom end of the injection pipe 412 under the action of gravity and pressure, the electrode plate is detected after the sample is dropped, and the detection result is returned to the electrochemical workstation for data processing.
After the detection is finished, the second electric telescopic rod 413 is contracted and reset, the electromagnet 422 is electrified again and attracts the armature 423 and the electrode disc 425 to descend, the motor 424 rotates the electrode column 427 to be detected to the operation port 430, in the rotating process of the electrode disc 425, the micro peristaltic pump 344 connected with the liquid taking pipe 343 extending into the water conveys the water into the injection pipe 412, and the second electric telescopic rod 413 extends to discharge the water from the liquid outlet of the injection pipe 412, so that the injection pipe 412 is cleaned. The electrode sheet to be used is put into the electrode column 427 to be detected after the detected electrode sheet is taken out from the electrode tank 428. After the electrode column 427 with the electrode plates is rotated to a position right below the vacuum tube 411 by the motor 424, the electromagnet 422 is powered off, the armature 423 is pushed to move upwards while the spring 426 is reset, and the bottom end of the vacuum tube 411 is embedded into the annular clamping groove 429 on the electrode column 427. The micro peristaltic pump 344 connected with the liquid taking pipe 343 extending into the second solution to be detected conveys the second solution to be detected into the injection pipe 412, the second electric telescopic rod 413 extends and pushes the piston 414 downwards, the second solution to be detected is dripped onto the electrode plate through the liquid outlet at the bottom end of the injection pipe 412 under the action of gravity and pressure, the electrode plate is detected after the sample is dripped, and the detection result is returned to the electrochemical workstation for data processing. In the invention, a series of actions involved in the period from the rotation of the electrode column 427 by the motor 424 to the extension of the second electric telescopic rod 413 and the downward pushing of the piston 414 and the subsequent actions of controlling the contraction and resetting of the second electric telescopic rod 413 to the replacement of the electrode slice and the solution to be detected can be integrated in a controller through programming and are automatically controlled by the controller.
According to the invention, before detection, the sample is heated by the heating sheet 333 in the sample holder 330, and the sample to be detected is uniformly mixed by the rotor 331, so that detection errors caused by uneven temperature and concentration can be avoided. In the invention, three liquid taking pipes 343 are designed, so that the same sample to be detected can be repeatedly detected, two different samples can be detected simultaneously, and the injection pipe 412 can be cleaned by the blank liquid taking pipe filled with water at a gap in the detection process or after the detection process is finished. The electrode sheet of the present invention is used only when it is used, and after the electrode sheet is placed in the electrode column 427, the motor 424 rotates the electrode sheet to the lower part of the vacuum tube, and then the inside of the vacuum tube 411 is vacuumized. Can provide stable vacuum environment for electrochemical detection and reduce detection errors.
In another technical solution, a circle of airtight sleeve 415 is arranged at the bottom end edge of the vacuum tube 411, and the airtight sleeve 415 is made of rubber. The space between vacuum tube 411 and ring slot 429 can be filled in this design, which is favorable for forming airtight space in vacuum tube 411.
In another embodiment, the rotor 331 rotates at a speed of 60 r/min. This design can guarantee under the prerequisite of the abundant mixing of sample that the sample can not be because of the high sample tube 332 that spills of rotational speed.
In another technical solution, the pump tube of the micro peristaltic pump 344 is a flexible tube made of low density high pressure polyethylene. The low density high pressure polyethylene material has good ductility and wear resistance and is the preferred material for the pump tube of the micro peristaltic pump 344 of the present invention.
In another technical solution, the length of the first electric telescopic rod 341 when it is extended to the limit is 10cm, and the length when it is shortened to the limit is 2 cm. The length of first electronic telescopic link can ensure that liquid taking pipe 343 can descend to the length that stretches into in the sample tube 332 enough to the sample under the prerequisite of absorbing, does not cause certain degree of difficulty to the in-process of changing the sample and clearance sample seat 330.
In another embodiment, the three electrode columns 427 are arranged in a central symmetrical manner about the center of the electrode disk 425. Since the motor 424 is a stepping motor, the three electrode posts 427 are distributed in a central symmetry manner in the present design, which can be adapted to the rotation frequency of the stepping motor, so as to facilitate the operation at the operation port 430.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (6)
1. Preservative detection device in cooked food, its characterized in that includes:
a box body, the interior of which is horizontally clamped with a clapboard to divide the box body into a processing chamber positioned at the lower part and a detection chamber positioned at the upper part,
the treatment chamber comprises a sample inlet, a slide rail, a sample seat and a sampling assembly, wherein the sample inlet is arranged on the side wall of the treatment chamber, the slide rail is in a bar shape and is horizontally arranged at the bottom of the treatment chamber, one end of the slide rail is right opposite to the sample inlet, a baffle is vertically arranged at the end part of the other end of the slide rail, two slide blocks are arranged on the slide rail at intervals, the sample seat is positioned right above the slide rail, the bottom end of the sample seat is fixedly connected with the two slide blocks simultaneously, three vertical blind holes are formed at the top end of the sample seat at intervals and are parallel to the length direction of the slide rail and are arranged side by side, a rotor is arranged at the bottom of each blind hole, a sample tube is coaxially arranged in each blind hole, the top end of the sample tube is connected with the hole opening of the blind hole through a bearing, the bottom end of the sample tube is fixedly, a gap is formed between the outer pipe and the inner pipe, a plurality of heating sheets connected with an external power supply are arranged in the gap, and the inner pipe is made of heat-conducting silicone grease; the sampling assembly comprises a first electric telescopic rod, a fixing plate, three liquid taking pipes and three micro peristaltic pumps, the first electric telescopic rod is vertically arranged on the lower surface of the partition plate, the fixing plate is horizontally arranged and fixedly connected with the movable end of the first electric telescopic rod, the three liquid taking pipes are respectively vertically arranged on the lower surface of the fixing plate, the three liquid taking pipes are respectively positioned right above the three sample pipes, a liquid taking port is arranged at the bottom end of each liquid taking pipe, and one end of a pump pipe of each micro peristaltic pump is respectively communicated with the top ends of the three liquid taking pipes;
the detection chamber comprises an operation port, a liquid transfer assembly and a detection assembly, the operation port is arranged on the side wall of the detection chamber, the liquid transfer assembly comprises a vacuum tube and an injection tube, the top end of the vacuum tube is fixedly arranged at the top part and the bottom end of the detection chamber are open, an air suction port is arranged on the side wall of the vacuum tube and communicated with an air suction pump, and the air suction pump is arranged on the partition plate; the injection tube is vertically arranged in the vacuum tube, the top end of the injection tube is fixedly connected with the top of the detection chamber, a second electric telescopic rod and a piston are arranged in the injection tube, the second electric telescopic rod is vertically and fixedly arranged at the top end of the injection tube, the piston is fixedly arranged at the movable end of the second electric telescopic rod, a liquid outlet is arranged at the bottom end of the injection tube, three liquid inlets are formed in the side wall of the injection tube, and the three liquid outlets are all at the same horizontal height; the detection assembly comprises a support column, an electromagnet, an armature, a motor and an electrode disc, the support column is hollow and vertically arranged on the partition plate, the electromagnet is vertically arranged at the bottom end of the support column, the armature is positioned right above the electromagnet, a spring is vertically and fixedly arranged between the armature and the electromagnet, the motor is a stepping motor and is fixedly arranged on the upper surface of the armature, and the electrode disc is horizontally arranged right above the motor and coaxially sleeved on an output shaft of the motor; the electrode disc comprises an electrode disc, an electrode plate and an annular clamping groove, wherein three vertical electrode columns are arranged on the upper surface of the electrode disc at intervals close to the edge of the upper surface of the electrode disc, an electrode groove and the annular clamping groove are formed in the upper surface of one electrode column, electrode plates for detection are placed in the electrode groove, and the annular clamping groove is formed in the periphery of the electrode groove; when the electromagnet is powered off, the length of the spring is the largest, and the annular clamping groove is in contact with the bottom end of the vacuum tube; when the electromagnet is electrified, the length of the spring is minimum, and the annular clamping groove is separated from the bottom end of the vacuum tube;
the other ends of the pump pipes of the three micro peristaltic pumps sequentially penetrate through the side walls of the fixing plate, the partition plate and the vacuum pipe and are respectively communicated with the three liquid inlets.
2. The device for detecting the preservative in the cooked food as claimed in claim 1, wherein a ring of airtight sleeve is arranged on the bottom end edge of the vacuum tube, and the airtight sleeve is made of rubber.
3. The apparatus for detecting preservatives in cooked food as set forth in claim 1, wherein the rotation speed of the rotor is 60 r/min.
4. The device for detecting the preservative in the cooked food as claimed in claim 1, wherein the pump tube of the micro peristaltic pump is a hose made of low-density high-pressure polyethylene.
5. The apparatus for detecting preservatives in cooked food as claimed in claim 1, wherein the first electric telescopic rod has a length of 10cm when extended to the limit and a length of 2cm when shortened to the limit.
6. The apparatus for detecting preservatives in cooked food as set forth in claim 1, wherein three electrode columns are arranged in a central symmetrical manner about the center of the electrode disk.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171820.XA CN109738498B (en) | 2019-03-07 | 2019-03-07 | Preservative detection device in cooked food |
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| CN201910171820.XA CN109738498B (en) | 2019-03-07 | 2019-03-07 | Preservative detection device in cooked food |
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| CN109738498A CN109738498A (en) | 2019-05-10 |
| CN109738498B true CN109738498B (en) | 2021-03-05 |
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| CN111579305B (en) * | 2020-06-19 | 2025-01-14 | 睿科集团(厦门)股份有限公司 | A pre-treatment sample traction type liquid addition sampling system |
| CN117844632A (en) * | 2023-12-27 | 2024-04-09 | 北京艾韦德科技有限公司 | A detection device for detecting human gastroesophageal reflux and a preparation method of a quality control product thereof |
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| CN105379784A (en) * | 2015-12-18 | 2016-03-09 | 宋永久 | Food heating tank |
| CN206945549U (en) * | 2017-07-27 | 2018-01-30 | 中证检测科技（天津）有限公司 | Cooked food product additive level test device |
| CN207007604U (en) * | 2017-08-16 | 2018-02-13 | 中证检测科技（天津）有限公司 | Food inspection device |
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Effective date of registration: 20231228 Address after: Building B1-13, Building 16, Shuwu, No. 73 Tanmi Road, Jiangbei New District, Nanjing City, Jiangsu Province, 210000 Patentee after: Titanium and spectrum detection technology (Jiangsu) Co.,Ltd. Address before: 300457 east part of building 30, Tongchang, 156 Nanhai Road, Tianjin Development Zone and office area on the second floor Patentee before: TRUTH TESTING TECHNOLOGY (TIANJIN) CO.,LTD. |